That sounds nice if you are close to your company and are sophisticated enough to buy and hold. The best investors consistently have sell disciplines to avoid major losses of capital. Buy and hold on developmental very small cap names like THLD is ok as long as you are not betting the world on speculative plays or making it apposition that will change your investment outlook.
I like THLD a great deal and have owned names in the sector forever (AMGN was mt first holding in the sector in '95). I am just saying one should fall in love with a woman or a guy as opposed to a stock.