I hear ya! I've broken a half dozen of so bolt heads off (in very inconvenient spots) trying to git'r'done, when better sense said spray it with PB, let it sit, pop with a hammer, repeat.
Needless to say, last body lift I did? I drilled holes above the bolts and hit both sides with PB blaster every couple of days for over a week.
Bolts came out right nice (and I'm in Utah!)
The important thing is learning from mistakes.
What were the rednecks last words?
"Hey watch this!" :)