I am the laziest person I know. How can I stop that?

I am very lazy and even if I have a lot of things to do (study for my finals, read, prepare for competitions) I always find a way of putting everything off. For example right after school I grab a coffee with my friends, then I go to the gym and when I finally get home I do noting but watch TV series and eat (I also need to lose weight and I eat way too much - I would need to work out for hours to burn all the calories). If I have any homework I do it late at night or I wake up really early. If I keep doing this, I won't have a successful life. I have so many dreams and yet I do nothing to accomplish them. I have tried various techniques but nothing worked. I like to think that I am an intelligent person, but this is not enough. I guess I am just too lazy and doomed to a life of failure and regrets.
I am the laziest person I know. How can I stop that?
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