Does anyone else get self-doubt jitters before each run? Even though I know I can run for a specific time or distance I always feel like "well I may have done it before but I bet I can't do it again - it must have been a fluke last time etc etc." My run tonight is a 30 minute continuous one and although I have already run for longer (33 mins for 1st parkrun) and I didn't feel like I was about to collapse I am thinking to myself - ooh 30 minutes, that's a long time, not sure I can manage that! It is so annoying, I keep having to have strong words with myself. I need to start believing in my own ability and have "I know I can" as my mantra instead of "But what if I can't"!