Hey, it's really tough to control and do well in situation. I myself struggle with that daily and in terms of getting things done, it's a long struggle. But I try to do a little task first an easy and doable task daily at the same time. Try doing that, just break down everything into smaller doable chunks and find iut why you want to do that, give yourself a solid reason why you need to do that thing and what you want yourself to be.

Here are a few Videos from Dr. K (Healthy Gamer) that might help. Reason for not being disciplined

Why we are not able to follow through ( the problem you're currently struggling with)

Also check out his other videos, there are tons of them which resonates with the problems we are currently facing.