I have plenty of excellent reasons today not to fix the flat on my bike... and it's been great having an excuse not to ride other than the tried and true "I don't have time." In fact, not having time was one of the reasons I tried to use on myself before fixing it. Now it's fixed and I have one less thing 'preventing' me from doing something healthy for myself. What have you been rationally, logically, reasonably justifying not doing that you know deep down you really want and need to do?