1. YOU'RE ONLY DOING WHAT YOU ARE GOOD AT, NOT WHAT YOU NEED. I hate step ups and deadlifts has they are difficult for me has i have long legs. That is why i do them
2. YOU ARE DOING THE SAME MOVEMENTS- OVER AND OVER AGAIN. If you are not changing movement-every 4-6 weeks, you are missing out on a valuable training stimulas. You're body adapts quickly to what you are doing, so change it up. Added bonus, you will avoid overuse injuries
3. YOU ARE INCONSISTENT WITH YOUR TRAINING. Choose a training that is in line with your lifestyle. If you only have 30 min 3 times per week and you take on a program that takes 1 hour 3 times a week, you will fail. The best training you can do is one that is sustainable in the long term.