Very scared

[Alexislox]

I received the Holy Ghost on dec9 2012
Since then everything has been amazin until I quit praying as much. I Egan to question myself. I quit my job for The Lord and have recently thought about going back and have told many people that I am doing hair again. I am good at it but I know that god doesn't want me to be doing it. I know he has a job for me but I am so desperate. I have an interview with a lady that owns a salon tomorrow.
I smoked pot after being clean for the entire time now on a Friday.. I went to church and repented on Saturday.. On Sunday I felt awesome and then evening service not so much. Monday, today, I smoked pot again and I feel so stupid. I know god is not going to be happy with me. I have ruined my witness to my family and to those that I have been witnessing to in the world. Now I'm afraid I'll never be able to go back and I'm very scared that I have done something irreversable. I am close to giving up completely. My mind is so wrong and I know my heart is so ugly. Please help me..