I had a friend that had a real issue with raging so I'll give you the same advice I gave him. The it helps to play a "game within the game" and by that I mean play with the intention of losing. For example, start a game against the medium or hard AI and your entire goal for the match is to see how many times you can block a string and counter. It doesn't matter if you win, you are only doing this to see how many times you successfully block a full string and do some form of a counter (reversal special, low poke, throw, etc.). Once you do your counter, back off and wait for them to come in and start over. Your measurement of success is not if you win/lose but rather how many times you completed your objective.
By doing this, you can trick your brain into not caring about the loss because they don't matter. You are playing your game and it's a competition against yourself. The feeling of not being in control was a big reason for my friend's rage ("There's nothing I can do!" "I always lose!") and this is one way he was able to calm down and enjoy the game. Hope this helps.