Willpower

you have to have a clear goal in mind, that's when the drive kicks in, then it's up to you to respond to that drive with productivity

usually a roll of dice at the beginning of the game

xD I was going to post 'STOP BEING A LIL'BITCH' to OP but you win this one xD GG

dont ever reply to me again

there's a good book by the marshmallow test author

i think 'Getting things done' by Allen is also relevant, not sure though

the goal-oriented responses are on point as well: you need to realise the reasons why you need to do something and either get on with it, or give it up and do something else instead

Right. What you're supposed to do is arbitrarily choose something and then just do that. But how do you choose one thing arbitrarily out of all the things? It's madness. I would envy people with that kind of dedication, but I suspect they have their own complimentary mental problems.

It's anything but arbitrary, in my experience. You have to find what makes you tick, makes you excited. Something that you will never get bored of because you like it so much.

This might require some soul searching.
What did you like to do as a kid? What is your means of procrastination? If you watch anime all day, and it keeps your from doing work, go and study Japanse animation. Start drawing.

If you play a lot of games instead of doing your homework, start to think of what kind of game you would like to make.

What if I have a goal but I don't have the confidence in myself to achieve it?

Good question. You can to take into account what could go wrong, and how great the chance is that it can go wrong. If you accept these possibilities and still want to go for it, go for it!
It will be worth it because you spent your time doing something you think is good/important/fun.

If you fail that is one lesson learned. I often say to myself; Most people who have failed to reach their goals gave up at some point. So don't give up.

Confidence is with me very much fleeting. It comes and goes. Try to find a balance. If you find your hesitant thoughts bring you down, be mindful of them and let them go and go do your thing.

If you persevere, though, I can almost guarantee you will have reached some goal in a certain way.

then you're a faggot