This is probably the dumbest thing I've ever posted and you will probably be questioning my "cognitive health" after reading this, so apologies in advance.
Basically, I'm 18 now and I feel like I can't ever reach my 12 year old self's peak again. I used to be quite mindful. However, since 14, after years of unhealthy eating, mindless scrolling, impulsive decisions / lack of good decision-making, exposure to stress (my own fault), rumination and lately, not getting enough sleep quite regularly, I feel like I've damaged my brain beyond repair and I can't even make good decisions anymore, because I'm so mindless and impulsive now. I also feel like I have a constant fog in my brain, which I didn't have until about 2 years ago. Also, although you begin to lose neuroplasticity when you're 25, isn't 18 one of the milestone ages when your brain reaches a certain level of maturity?
I'm most definitely overthinking this, but have I made irreparable damage to my brain or can I still catch up? In essence, I feel behind in life lol as I can't seem to think as straight as I did when I was 12.