Got any phobias? Engage in obsessive compulsive rituals? Still feel guilty over past indiscretions? Excellent. As writers we can tap into those life experiences to build multi-faceted, deeply human characters.
By the time we’ve reached the ripe old age of ten or so, all of us will have developed psychological, mental, spiritual, and even physical battle scars. By the time we’ve lived a couple of decades, we will have learned various coping mechanisms to help us get through our day. And by the time we’re middle-aged, we’re as bent and dented as any used car on a second-rate car lot.
So write about it. Lemons to lemonade.