Make a rod for your own back
Definition 1 of 1
Pro Tip 1/3Future Consequences
Use when an action will cause future difficulties, often due to a lack of foresight. 
He's making a rod for his own back by ignoring his homework.
Pro Tip 2/3Idiomatic Caution
It suggests a warning about the results of one's actions, typically used to advise someone. 
If you don't start studying, you're making a rod for your own back.
Pro Tip 3/3Avoidable Trouble
It implies the trouble is self-inflicted and could be avoided with different actions. 
By procrastinating, you're just making a rod for your own back.