Yes, exactly - we try to resist certain feelings because we know with our mind the good thing we want to do. So, we fight. We don’t want to follow the feelings. However, you said we become a slave when we follow the feeling when we could not resist it. True. In the fight, we were weak. We did not want to fight any more – so our Desire or Love was for something else.
Perhaps we have a fight to resist the feeling of comfort. We want to do something good, but the feeling of having comfort is strong. We fight. But we love the feeling of comfort more than we love the good things we wanted to do. So, we do not want to resist the desire for comfort and we stop fighting. Then we commit a sin.
Should we be blamed because we wanted the good feeling of comfort? No. We are blamed because we wanted comfort more than we wanted the better thing to do – the good thing. Perhaps we wanted to do some good work. But we choose comfort instead. The comfort we choose may also be sinful (drunkeness, lust, etc).
What is to be blamed is our weakness. That is a sin of weakness. A weak man is one who does not want to fight, or has a habit of avoiding things. He chooses the easy path every time. That’s a bad habit.
A weak man gets weaker the more he falls into sin.
The only way the man can become free is to turn to God and repent, say that he is sorry. Then he tries again when the next temptation comes.
Otherwise, if he is too proud to pray to God - he stays a slave to his sin.