How to be more effective with my time

Hi HN, Consistently throughout my life (I am 20 years old) I have found myself wasting time.

I am not saying I need to have less fun, but quite often I will waste hours per day doing meaningless tasks such as watching a film or going on a long walk. I enjoy programming and learning - the problem is that I can't motivate myself all the time so I end up wasting hours doing meaningless activities.

I feel like a lot of the advice out there is written for people who have serious procrastination issues - I am more focussed compared to the average person.

But If I want to build something really cool and 'make the world a better place' I need to inch my way towards perfect time management, but I am really struggling to do that.

Thanks for reading, any advice?