Christians only. how you can increased your faith?

see, i have noticed since the day i prayed to god in the name of jesus about my faith that my faith has increased just abit. i am a baby christian and that was like one month or 3 weeks ago. now how can i increase it rapidly also how you stay without fresh sins. see, i have a real problem with those types of sins, carnal. so please i would really appreciated your thoughts.