Today

Today I have woke up early, at seven o´clock, because I wanted to take advantage to study  of studying a little before, so to start with other works. So I didn´t sleep haven´t slept a wink, because yesterday I went late to the bed. After study studying I had a breakfast with my wife, took a shower and went out to take a cofee. I have the a strange costume of have procedure of having breakfast in two steps. First I ate drink the orange juice, eat the toasts and fruits at home, and then I go out to have a cup of cofee in a cafe. Yes, I know, perhaps it is not the fastest way, but I like did doing it in this way. Then I have been swimming for forty minutes, trying to keep me in fit, and finally I came back home to have a quck launch launch quickly, because unfortunately I have to work today in the afternoon.

Today

Today I have woke up early, at seven o´clock, because I wanted to take advantage of the time to study a little before to start with other works starting other work. So I didn´t sleep a wink, because yesterday I went late to the bed (or I went to bed late). After studying I had breakfast with my wife, took a shower and went out to take have a coffee. I have the strange costume custom of have having breakfast in two steps, first I ate the have orange juice, toasts and fruits at home, and then I go out to have a coffee in a cafe. Yes, I know, perhaps it is not the fastest way, but I like did to do it in this way. Then I have been went swimming for forty minutes, trying to keep me in fit (or keep me in shape), and finally I came back home to have lunch quickly, because unfortunately I have to work today in the afternoon.

Very good. My corrections are in red and my suggestions to sound more natural are in blue/grey. 

The use of "have" can be quite tricky. You got it right most of the time but keep practising.