Consistency, self discipline etc are the key to success, they are the criteria one ought to have or meet before success will be achieved but not in everything we do in life cause there are a lot of people who has these things I mentioned above yet they are struggling to survive ( to be successful in life)  and one of most common factor that always affects people not to meet up some certain things in life and even in this push-up we are doing, is procrastination. Lets say someone usually do his or her push up by 7am in the morning and then the person woke up by 6am in that morning just for the person to stand up and start preparing, he or she will be like, let me sleep and i will wake up by 8am and do it, just for the person wake up, time has already passed and this usually affects schedule. if someone try this twice or more, stopping it will be very hard.