Should I keep my oath to pray Ishraq salah even though I didn’t know the conditions when I made it?

Something is troubling me since some days. Once I made an oath to pray Ishraq salah everyday without breaking it and that time I did not know that I cannot break it ever since. Some days ago I came to know that I have to fulfill it and pray regularly. But I am not feeling to pray regularly as I made oath. Since I made my oath when I did not have information about that I should fulfill my oath without any excuses. Should I pray or its Ok not to pray because as I said I did not have the idea when I made the oath I should fulfill it in any condition.