I find it impossible to focus on anything.

Bump.

do you watch porn? do you masturbate?

Not on a regular basis.

How often? This can mess your brain chemistry up.

I am going through the same thing I cannot focus.

Like mabey once a month. It's been happening since the start of year 13 (October 2014)

see the doctor, you got ADHD

As above.

You could take a look at an ebook "Procrastination, Motivation and You" by Kevin Bucknall. It is down to US $0.99 cents at the moment from Smashwords online. Lots of ideas some of which might help you. You can get a sample download too.

Good luck with your problem.