Why should we propose a draw?
Often a player decides to offer a draw with his opponent out of fear ( rarely because of fatigue ). To improve we must overcome the fear to loss. The difference between a good player and a strong player is that the second has clear ideas and does not think about the other during the game ! Thinking about the draw proposal can be devastating for our game. We risk wasting important mental resources! Every time in my tournament games when I thought " I will propose drawn between 4 moves", I lost!
To become a good player it is important to not think about the draw proposal. Usually only a strong player or an expert can know the time to offer the draw! I've seen many young talents lose against experts because they primarily think about offering a draw instead of thinking about how to play!
The game must be saw like a good opportunity to improve and not a chance to get points for our rating!
I want to thank Peter for the help, and I wait your opinions !