Do you think this is the key to resilience?

I'm 18 and I've been through a lot in my short life. I've come to realise that in order to pursue a goal

I have to be doubt-free in my mind. I do this by letting myself doubt nothing.

I also keep a positive attitude, eat healthily, engage my brain, excercise every day, and have a healthy social life.

However, I've been through a lot so I still feel quite depressed and anxious often. I use mindfulness in order to seperate my depressed and anxious thoughts from my sane ones but it's difficult sometimes. I've never had hang-ups but I'm developing the tendency to get them which is worrying. Luckily I know how to lose them as well- I accept and forgive every time one turns up.

Even though I'm good at those kinds of things it brings me little joy because this is caused by the fact that I feel "built on matchsticks": my psychology feels very fragile. Is there a way to be less acutely self aware, aside from just thinking less about myself? I've gotten to a level of trust in myself now where I think that may be possible.