Assalamu alaikum wa rahmatullahi wa barakathuhu..5.major things to increase ur dheen .1.reading Quran morning n eve(tafseer/meaning)2.do dua (keep ur heart upon dheen )اللهم ثببت قلبي على دينك..allahuma sabbith qalbii ala dheeniq.3..history of prophets.4.do amal wt ilm.5.good friends.n good relation wt ulammahs..in shaa allah aameen..