I'm quite disappointed in myself.

If it really bothers you, and you can see that unhappiness increasing as you go farther, then you should delete it. It's much better to do so sooner rather than later. I think having to deal with some quests another time is better than long-term disappointment.

Delete it and try one more time. Or keep trying until you're satisfied! If it's going to be your main, you should do it in a way that makes you happy.