Like anything in life, you will get to a point where it will take more work and effort than you expect. 2 hrs a day every day is a good way to maintain skills. And if you you are at gigging levels, you should be gigging. Every one has a limit on their ability in physical and mental skills. You'll eventually know where you stand among the competition once you get out there and play. Or you can stay indoors and play like the many amazing bass players on the YouTube. Some are incredibly talented, while the masses are not.
It's much like playing and competing in golf. You practice 3 to 4 hours a day, study and develop techniques, go to college almost daily and play 3 to 4 rounds a week. Then you compete, get better, learn more and eventually become a top golfer in the local community. Then, there comes a point where you put everything into perspective. You discover you need to put in a lot more hours and effort for very small gains. And after putting in a lot of thought, you realize, it's not worth it. Nevertheless, at that point you know where you stand among others, and you know you'll never get any better than you are at that point.
Unlike golf, bass has other mitigating factors that contribute to greatness other than the skill level. Looks, age, personality, luck, and who you associate with and who you know in the music industry. Keep that in mind while you pursue your dreams.
