Your whole reaction to the world may change. You may become more confident, feel less anxious, feel more stable and become less vulnerable to emotional swings. Life may no longer seem to take so much effort. Also the Feldenkrais Method is built around helping you develop more self-awareness of what you are doing and how you are doing it. The awareness you'll learn can be of benefit in many parts of your life.
Some people even find that they make spiritual shifts.
There are many components to the Feldenkrais Method that all inter-relate to produce these results. To help simplify the process here are just 3 of the important aspects. I'm sure you'll be able to work out many others. The Method focuses on your skeleton. The Feldenkrais Method considers your skeleton to be very important, i.e. your bones, how they move, and how their movements can become more economical and productive.