>>82150Try to find activities that are fun, but still useful.
I'm assuming the major waste of time is going to be doing things online. Try going for walks or visiting museums or something like that, and on your way there if you can take a bus/train leave your phone at home and bring a book.
>>82158like he said its about discipline, try making small changes until your mind gets used to them and enjoys them more. Separate an hour of your day before you would go to bed and force yourself to read. Even if you fall asleep early, at least you didn't stay up late on your phone. Art or any other creative venue is a good way to spend your time