Blocking my ex on instagram bad?

Anonymous
I broke up with my girlfriend 3 weeks ago. She said she doesn't know if she sees me in her life or not. So I thought to myself that I deserve better and ended it.

Right after the break up, I blocked her on instagram and unfollowed her sister because I know that is gonna hurt me.

Would that ruin my chances of getting my ex back?
Blocking my ex on instagram bad?
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