I can't go through with it - This phrase is for people who are too lazy or too scared to

This phrase is for people who are too lazy or too scared to finish what they started. It's like throwing in the towel while still holding the rope.

'I can't go through with it' said when he had to sing in front of the class.

'I can't go through with it' said when she had to tell her crush she was going to another school.

'I can't go through with it' said before he had to fight his brother again.