Hey hey! Hope you're well.
Basically, the reason why you can't get things done is because you don't have a "WHY". What makes you want to get up in the morning? What's the reason you are going to study hard?
Do you want to make a difference? Is it for your parents? Are they depending on you?
You need to know why you are going to do certain things, then you make a commitment. And you show up EVERY SINGLE DAY because you know that you must do it because of XYZ. When your passion and purpose are greater than your fears and excuses, you'll find a way to make it happen.
Go on YouTube, search up: Motivational speeches and watch a couple of the popular ones. Does that motivate you?
Try watching this: https://youtu.be/xp2qjshr-r4
I can TRY to motivate you, but at the end of the day, you are the only one who can get things done.
But did you bother to watch?