I've been there too! It helps me to re-approach a trail section that threw me in baby steps. Maybe slow my speed & ride only a few feet of the difficult section until I feel unsafe. Then I get off & walk the bike through the rest of it. I can usually ride at least a few feet further each time until I can tackle the whole section again. Sometimes this takes a few rides, sometimes it takes most of a season to get back to where I was.
My husband is also very encouraging. Sometimes I figure out that I probably could have ridden a section that I just walked. He reminds me that I didn't waste my opportunity & that I can walk my bike back & try riding the section again. I've gained confidence on several difficult trail sections by walking them first & then immediately going back & riding them.
Aggie is right. Some days we feel braver & more coordinated than others. It's OK to embrace a reasonable amount of our self-preservation instinct.
LORI
Pivot Mach 4 / WTB
Updated Vintage Terry Symmetry / Bontrager InForm RL WSD