Law Suit Induced Stress

I am being sued for speaking out (slapp law suit) about a development going up behind my home. A number of people spoke out but I am being singled out because I was the most vocal. I am being sued by a very rich man which means he could drag me through court until I am broke. I have never faced this kind of stress and anxiety before. Has anyone found a good approach to dealing with the slow legal process and the anxiety/stress in brings ? Thanks