Welcome to SK!
If you're having trouble settling with one particular character, perhaps it would help to prepare for it differently than you have been? There's a thread
here that has a lot of things you can think about when planning out who your character will be. I find that I'm more willing to stick through dry spells when my character is a distinct person in my imagination, one that I want to see grow and thrive.
Or, if you already put that much planning into it, I'd suggest going the opposite way for a fresh start. Give yourself the roughest of outlines and plunge in. My first successful character had amnesia, because I hadn't the faintest idea what sort of culture or background existed in the game for me to draw from.
I would advise priest or sorceror for making friends, both have abilities that are often called upon. Griffon is an excellent starting race as far as damage and durability go, although you face emnity that way, both for being lighty and non-humanoid, and they're weaker at higher levels.
Good luck, and feel free to ask questions here or IC in game - once you find them or send a tell/mentor request, there are a lot of friendly folks glad to help.