I'd add a couple of tiny things to charlescuy's corrections:

but as you know, if you want to rich reach your aim you should practise everyday. 

The man who was talking about wine to/with us for 2 hours wasn't really good for the money morning (which) I paid.

Today

What's What a shame! I try to write or say something in English and it seems like I will never learn this language. It is a reflection on my mood and motivation. For example, several hours ago I wanted to tell (write) here how was my day was.. Ok, I take my lap-top, open the note and nothing. Not one thought of how I can describe(could have described) what I was doing before. At the same time I have to do lots of study-related things and I feel that I haven't enough energy for it. I am writing the note now, just because I didn't do anything for improving my English skills today in the morning, but as you know, if you want to enrich your language, aim to you should practise(practice in USA) everyday. This note is a part of my practise. I try to think in English and write it immediately.

By the way, today I attended a wine master class. It isn't my first event like this, as I've tried it before, but in another place. And my first time was more interesting. Today's experience was ordinary and I blame a very incompetent leader or host leading. The man who was talking about wine to us within for the 2 hours I paid for, wasn't really good for morning. which I paid. This last sentence can probably be done differently again, but I can't put my finger on what you were trying to say.

And now I am going to work hard all night!