That's where role playing comes into play. If I'm going to role play a mage who uses a dagger for close up self defense, that's easy to role play and he'll always turn out that way. Now if you decide to play that mage and then find out it's not very fun to play that character then you have to decide on whether to start over or say the heck with it and turn the charcter into something else.
My characters are normally not very complex at first so making changes as I go is easy to do without messing up the overall character that I want to role play.
not sure what you're saying, but i DO roleplay, thats just it, though... i sort of BECOME my characters, which is kind of why MY plans dont play out, because im not really myself while playing.
but like i said, my characters' destiny makes them perfect [to me], so really, i just grew to trust my characters.
i kinda take RPing to the next level, i suppose.