Let's take self-pity. Now you have support for this pity. In the end, the nafs makes you do what it wants you to do. You think this idiot is God. Every nafs' desire has a price.
Every action has an equal reaction.
Don't think that by going along with your nafs, you are free. What you are declaring is your freedom from Allah. At the same time, you are declaring your slavery to the many-headed boss in your nafs, which will drive you into agony for sure. At the end of this agony there is no reward, but more agony. The reward for misery is misery.