Whatever you do DONT QUIT!!!! If you quit then you have proven that you aren't strong enough to play bass. I bought an Ibanez 5-string 2 years ago, played around with it only to quit, just like you are contemplating. Then God blessed me to be able to find my dream bass, Fender USA 5-String Jazz Deluxe, on Ebay selling for only$450.00. I took that as a sign that God wanted me to try my best to get this bass. I bought it and have been playing now for six months. Yeah its hard sometimes because as a bassist you have argueably the heart of the band, but you have to put in time. Thats is something that I realized that I had not been doing the first time I tried to play. Now I practice about 2-3 hours per day, everyday. Do scales, modes, chords, progressions, and most importantly THEORY and READING. Put in the work and I promise you will become a better player. I know because in the six months that I have been playing seriously, I have recieved 5 offers to play at different churchs. Just dont quit.