I'm just guessin', but I would say EVERY JW feels inadequate. That's how you're supposed to feel, isn't it. They constantly, week after week, year after year, remind you of how much more you should/could be doing, they constantly force feed guilt on you. You'll NEVER graduate from the Theocratic Minstry School, ...................You could try staying heavily medicated, that helps....for awhile. 
But...I'd suggest moving on with you life and accepting that being a JW doesn't work for you.
Welcome to the board, hope you find what you're looking for.
lisa