I wouldn't say I am frustrated with my abilities as a bassist. I never wanted to be a musician anyway. Happy being a designer by trade! Despite that, I love performing in my original band and have been told that my basslines are sweet, solid, stand out and well thought out. I also hope we get loads of gigs and become more established.
The only thing that really does frustrate me is trying to get gigs as an original band. We have been fully established since January 2012 and we have had one gig. That is poor. What is even more frustrating is pubs/venues not getting back to you. I guess I am a frustrated bassist lol.