riddle

[oneinder]

I have one, you have one.
If you remove the first letter, a bit remains.
If you remove the second, bit still remains.
After much trying, you might be able to
remove the third one also, but it remains.
It dies hard!
Q : What is it?

[grasscarp]

habit?

[bloop-]

yea its habit luvd play on words in d riddle!!!!