The person sounds like they are falling apart doing everything they can to improve themselves. They are relying on the other person to stick it through with them while they try to make these changes. They are making a promise they don't know if they can keep, but they still want the other person to meet them halfway, and not leave them, even though they can't be sure they will ever get better. They are so reliant on this other person's support, but it's still not enough because they are still falling apart and feeling pretty lost.
The person sounds like they are falling apart doing everything they can to improve themselves. They are relying on the other person to stick it through with them while they try to make these changes. They are making a promise they don't know if they can keep, but they still want the other person to meet them halfway, and not leave them, even though they can't be sure they will ever get better. They are so reliant on this other person's support, but it's still not enough because they are still falling apart and feeling pretty lost.