Guys, I used to suffer from Bigorexia as well, I still kind of do, but I used the following thoughts to help me get over that fear:
1. Some of us like me, primarily want to be big to be intimidating to others. Everyone has their reasons (Got picked on as a kid, etc.). For the first 2 years of working out, all I could think about was how big I wanted to become, and how hard it really was to do it. Then it dawned on me that today you can be a big as a house, but you're still no match for punk ass bitches with a 9mm. So with that thought, I realized it was ridiculous to try to get bigger and stronger as fast as I could.
2. The second reason most guys work out is so they can look pretty/sexy/whatever to women. I somewhat feel the same way, but only slightly. I realise that women want a guy with a pretty face and lean. Muscle is kind of a bonus to them, but no woman will want you if you're an ugly fuck no matter how big or ripped you are. Personally I realized that I'm just an average guy, and no amount of working out will make much of a difference to get a woman.
3. The third reason I suppose would be to excel in Sports. Personally I don't play sports much, and never have to compete in any field, so this is totally moot for me. Others that may compete do have reason to get big and strong, but out of all of us, how many really fit into that category?