Doubt opens new paths, new horizons. It gives you the opportunity to see the other thousand roads there are next to the one you have focused on for so long. The beauty of doubt is the same as the beauty of dreaming. You imagine, you feel and you create new hopes while you observe how your life could be in another reality.
Doubt gives you the opportunity to start all over. It just takes the effort to make the decision and start in a new direction. No matter what you decide to do, as long as you think and feel is the best thing for yourself, you will have chosen correctly, time will show you if you were right, meanwhile, enjoy the ride.