You really need to take a look at this thread
http://www.acousticguitarforum.com/f...d.php?t=228699
Barre is a technique that needs to be developed slowly and intelligently otherwise you can get permanent damage.
Start with partial barres. when going to full barres pay attention to exactly where you apply pressure. Never work harder than you need.
Many music styles work better with thumb over neck chords, learn those as well. I play maybe 80% those and partial barres, full barres only when really needed.