As with every life question, the answer starts with the big why. Understand life and decide what you want to do and experience. And then follow it. The best life hack is clarity and intent. My scorecard and purpose in life are to experience peace and joy for myself and for others.
Career or profession is “what we do for others”. Career is not a separate or siloed-off section of life - it is embedded and entangled in it, ideally harmoniously.
A career or profession that is harmonious with my life purpose (1) increases peace and joy for others, (2) while doing something that’s joyful and interesting for myself, and also enabling (or at least not disrupting) other peaceful & joyful activities. I don’t want to trade off my peace and joy for increasing others' as I don’t think that’s necessary* or optimal because I feel and do better when I’m enjoying what I do.
If I want to grow in my career, then I’d either (1) deliver more peace and joy, or (2) engage in more joyful activities (or those that enable joyful activities).
I can grow and maintain by (a) changing the problem I work on (more interesting, valuable, underinvested, etc.), and/or (b) by changing how I work on the problem (more effective, right level of challenge, more fun, more compatible team and setup, etc.).
But the maximizer approach - seeking the “best impact” and “best joy” - is never-ending, all-consuming, and can compromise my main goal of experiencing peace and joy. I don't need to constantly grow - I can just maintain if I'm happy. Being a satisficer and focusing on making directionally correct moves might be more joyful.
You don’t always know where to start or how to grow. You will make mistakes, move backward and sideward. Try not to get sucked into pursuing side outcomes like money (beyond a point), what society thinks is hot or impactful as you will lose yourself, fool yourself, and miss the main goal. Keep it simple, clear, and intentional. Define, explore, try, learn, adjust and repeat.
[1]A potential exception is when I’m losing my peace because I’m struggling with basic needs.