I get negative thoughts but I do my absolute best to banish them, as they can literally ruin a run short or long.
Just think when you do your 10 miler next week, you have already run 9 miles so you know it is possible, once you do start doing the distances you do wonder why you are doing them but after awhile they do give you confidence.
Perhaps do a body check when you are feeling negative, ask yourself do your legs feel good, is your breathing good, if all yes then everything is fine, if no then you may need to slow down slightly until you feel comfortable again.
Let us know how you get on
TT
