The problem with timid flying is in many ways it becomes a self fullfilling prophecy of sorts. A cartoon fighter pilot either isn't very good or things of him/herself as not being better than the other cartoon fighter pilot and not wanting to lose over and over again begins to fly "safe" only engaging with alt and speed and beating a hasty retreat at the first sign of a "fair" or disadvantaged battle. They do this for awhile and get a few kills which re-enforces the idea that they are getting "better" but they are really stunting their own development in the game.
It seems that most shrug off and explain or try to legitimize this behaviour by claiming some link to history, ignoring the fact that this is a silly little cartoon airplane game and as a very wise friend of mine likes to say "no one really dies and the planes are free". The only realy way to learn and become a better cartoon fighter pilot is to fight and lose, then try and answer the all important "why?".
To quickly apply my own experiences here, it went something like this. I joined the game waaaay back in the AH1 beta days... coming off boxed sims like EAW and Janes WW2 Fighters I was really anxious for people to think that I was "good" and the best way to do that was to have an impressive K/D score to hold up as proof of how good I was. I flew high, I flew fast and I didn't worry too much about really learning ACM and how to dogfight because I had a big trump card I could play, as long as I had a few thousand feet of air under my wings I could dump the nose and high-tail it out of there. When I finally switched to a slower plane and removed that trump, my "skill" curve shot up. After a few months flying a F6F I realized how stunted the first few years I spent here really were.
Now I still get kicked around a lot, but I also win some, and I win them (and lose them) regardless of the initial situation, and have a lot more fun doing it. Instead of spending 45 minutes of an hour flight climbing and running, only to fight for 15 minutes, I now can spend the 15 minutes climbing out and the rest of the flight fighting.
No one wants to lose all the time, but if you can make the loses educational you'll find that they start coming less frequently.