Research consistently shows that happiness is not something you acquire, but rather the act of directing attention towards something or someone in a way you find meaningful.
Consider the ideal version of yourself, and consider the things that ideal version of you values as meaningful. Those are the things you should focus your attention on wherever possible.
If you need help figuring out what is meaningful to you, think about what you take pleasure in, then move the goalposts a little bit. Tighten the belt, or increase the stakes just enough that it is challenging. Create something new that gets a grip on you, and before you know it, you will find yourself chewing on it until even more new things emerge from it.
Be outcome independent. Don't let people tell you what you are able to do, what you should be doing, how to do it. Any given life you can live is only as powerful as you find it meaningful.
Your life is yours; it fits you like your skin. Life is a bit like a mech-suit, where everything you've ever done and everyone you've ever known is an extension of you, and you an extension of them.
Don't get caught living someone else's life. Humanity has had a lot of time to build up systems and get invested in them. Remember, you always have the freedom to choose which things you value and pursue them.