Before You Look for Anyone

Define what you actually want help withName one to three concrete goals (a skill, a decision, a transition) rather than "career advice" in general, so you can recognize the right person and use their time well.
List the traits you need, not just the titleThink relevant experience, communication style, and availability, not the most impressive name you can find.
Check for a formal mentoring program if if formal program existsIf your workplace or school runs one, it's often the easiest way to get matched with someone open to the role.
Look inside your existing network firstA colleague, professor, or former manager you already have some rapport with is usually an easier ask than a stranger.

Choosing the Right Person

Pick someone with the experience or path you're aiming forIt's usually best to select someone who has more years of experience and a career path similar to the one you're following.
Favor someone you can talk to candidlyYour mentor should ideally be someone who is not in a formal position to evaluate your job performance, so you can be honest without career risk.
Weigh shared values against a differing viewSome differences between you can help bring new perspectives, but shared objectives can enable you to build a strong relationship.
Judge whether they can actually teachYou may be in awe of someone's work, but sheer talent doesn't always translate into an ability to coach.
Confirm they have real time and energy for itBoth you and your mentor need to have the time and energy to build a new professional relationship, and an overcommitted mentor will quietly fade out.
Consider more than one mentor if if one mentor cant cover everythingSome people build a personal board of directors, three or four people they meet with regularly to talk about professional and personal goals, instead of relying on one person for everything.
Build a bit of rapport before askingGet to know the person a little rather than approaching a total stranger.

Get specific about what you're asking forName two or three concrete things you want help with, since asking someone to just "be my mentor" tends to backfire, because the person will just ask you, "What do you need help with?"
Propose a low-commitment first stepSuggest a single conversation rather than an open-ended arrangement right away.
Be upfront about your goal for the meetingLet the person know you want to meet to talk about professional development so there's no ambiguity.
Accept a "no" gracefullyA decline is almost always about bandwidth, not your worth; ask if they can suggest someone else.

Agree on logistics up front if once they say yesSet the logistics: how often you'll meet, preferred format (in person, virtual, or hybrid), and how you'll communicate between sessions.
Set a rough end date or review pointMost mentorships last for four to six months, but you can decide together what works for you. Set an end date to help provide a deadline for your goals; open-ended arrangements are more likely to quietly dissolve.
Establish boundaries earlyAgree on response times, off-limit topics, and how much notice to give if either of you needs to cancel.
Align on what the relationship is and isn'tThis is guidance and perspective, not a promise of a job, promotion, or introductions.

Bring an agenda to every sessionArrive with specific questions or a decision you're wrestling with, not empty-handed.
Be honest about where you actually standBe honest with your mentor about what you want to learn, and answer their questions about your career truthfully.
Practice active listening before pushing backResist jumping in with your own view before you've really heard theirs out.
Take notes and set action itemsLeave each conversation having agreed to define clear, actionable goals based on the discussion and any deadlines attached.
Follow through before the next meetingDo what you said you'd do; nothing burns a mentor's goodwill faster than repeatedly showing up with no progress.
Give feedback of your ownGiving constructive feedback to your mentor may help them learn how to support you better.
Respect their timeKeep meetings to the length you agreed and don't let last-minute cancellations become a habit.

Revisit your goals periodicallyCheck whether what you originally asked for still matches what you need now, and adjust if not.
Watch for a one-sided dynamic if if relationship feels one sidedIf you're always taking and never offering anything back (an introduction, a useful article, real thanks), find a way to add value on your end too.
Say thank you specificallyCall out what actually helped, not just "thanks for your time."
Reassess if the fit stops workingIf the relationship becomes uncomfortable, unhelpful, or one side consistently disengages, it's fine to let it wind down rather than force it.
Close the loop at your agreed end pointHave an explicit conversation about whether to continue, change the format, or wrap up, rather than letting it fade without a word.
Stay in touch afterwardA brief update every so often keeps the door open even once regular meetings stop.