1.new riders are beating you
2.your skipping workouts more often
3.you do the same workout over and over
4.your getting the same results in the same races
5.you have been racing the same category for three years or more
6,you ride at the same speed every day
7.you own a wattage meter but use it improperly
8.you are making the same mistakes
9.you make excuses
10.your numbers are decreasing
11.you are getting dropped when you never used to
12.your racing out of routine
13.you follow wheels too much
14.you avoid hard shit more often
15.you have not listened to led Zeppelin in years

probably time to reevaluate your training plan or seek a new coach