Many works based religions like Christianity and Islam want you to change. They want you to become more 'holy' or 'righteous'. You have to give up things that can be difficult to give up. You are forced to pressure yourself to be a certain way. And when you fail at this there is some compassion but you must repent first then try again to be this 'certain way'.
This is all very hard on a person and shows a lack of understanding of karma and a person's karmic debt. That is the beauty of the vow of Amida Buddha. His compassion shows he understands karma and how karmic debt can prevent people from achieving their most 'holy' and 'righteous' selves to the point that constantly trying to achieve it is pointless.
Now, once again, I won't say a person should not try and overcome their problems. They can and should try, but this is so they can live a more peaceful and happy life, not because their is a deity watching over them wanting them to not 'sin'. And if the difficult struggle against one's problems is causing too much issues and leading a person to depression and guilt then a person should accept their karma and who they are.
If a person just can't give up booze, then let them be a drunk who rests in the compassionate vow of the Amida Buddha. Sure it would be better for their health if they didn't drink so much, but perhaps their karma is just more then they can handle. There should be no pressure. Amida understands and expects nothing from you.
Namo Amida Bu
