Study something you’re truly passionate about during your late teens and early twenties.
You should take control of your career during your mid-twenties to mid-thirties.
Our careers pass through stages, so you should plan for them. Even though they’ll probably be disrupted by unpredictable events. So you also have to learn to cope with getting knocked off track!
Which means your most important career stage is actually the first, in your early teens. Where you develop the habits and skills that will underpin your progress. Such as controlling your impulses and working hard. Success is never effortless, so develop determination and perseverance. And find your first small jobs, so you’re already developing workplace competences.