dude i used to feel the same way, everytime i went out i would run a tank or two and something would break, and then you bet better and better and now i go out everytime and never break one thing. i havent broke anything myself in months. trust me it will get better. you will learn you truck and when something goes wrong you just fix it real quick and your cruisin again
it's not always that something is broke either, sometimes it just needed to be tweeked, like bent drive shafts, just use a hammer and straighten them out. The reason stuff breaks is driver mistakes, and incorrect maintenance, the more experienced you get the less stuff you break.