Is my prayer permissible, even though I commit a sin that I cannot abandon, and I interrupt my prayer whenever I commit this sin?

Do not abandon prayer because of a sin you committed, for all of humanity errs, and the best of those who err are the repentant. Your prayer is valid as long as the sin does not reach the हद of disbelief (kufr). Repentance is accepted even if the sin is repeated. Abandoning prayer is one of the greatest sins after polytheism (shirk) with Allah, and its sin in the sight of Allah is greater than the sin of taking a life, adultery, theft, and drinking alcohol. Emerge from your inner struggle by consistently repenting and seeking forgiveness, by seeking a lawful alternative, by gaining a deeper understanding of the religion, by resorting to Allah through supplication (dua), and by consistently performing prayer with humility, for "indeed, prayer prohibits immorality and wrongdoing," and "indeed, good deeds do away with evil deeds."