lo learn or not to learn

I'm think, I'm not learn English. Why? I don't know, but the time pass and I fell bad, because I follow without understand anything.
I need an advice, what can I do for learn better?
Help me, please!

Excercise?

Actually I'm worried because I'm getting fat and my physical condition is very bad.

Yesterday, I decided to do excercise. Only that even if I did many excercise when I was young, now I never do excercise, then ¿How do for not desist? Today, I read an article on line, where the writter give advices for make of excercise a habit. In that article, an advice is: write the objective to give importance.

For that, I decided to write this paragraph.

I hope and really want to do excercise my habit. We'll see!!!