If we were to give out awards for worriers, there would be many contenders for top honors. I'd surely be one despite my years of working at CBT, all manner of exercise, and daily meditation.
Consulting with a professional is a good step, meds may help you. The hard reality is that the real work is mostly yours to do, but it can be an interesting adventure of self-discovery. You can regain your hope and optimism, at least periodically.