Trying to get a good job however I have two old possession charges. Whats best way to put on applications?

In 2007/2008 I made some stupid mistakes (like a lot of other 18/19 year olds) and got two misdemeanor possession of marijuana charges on my records. I went on probation, paid the fines, and have since got my life in order. I am 21 years old now and I've stopped using marijuana and all other drugs, went through rehab and am 4+ months clean, part of NA and know I have put all my past problems behind me. I have a totally new outlook in life and am just trying to better myself. I recently moved in with my mom into a new state and am starting anew... however the hard part now is just finding a job! I really want any Full Time job (Benefits) however until that comes available, i'm trying to literally get any part time/full time job in the area. With that all said, when filling out applications it asks for background information. I know not to hide any information, so I wanted to know any suggestions on how I should go by filling out my background information?? I know we have to state all past records which i understand but I just dont want potential managers to be deterred by my possession records. Any tips on how I should go by putting this information on the forms?? Should I include comments/info about where I am now in my life so they dont think I'm still using or even considering drugs anymore? I just want a fresh start but it's hard to get people to hire you, let alone interview you if you have past misdemeaor records. Any suggestions would be great! Thank you.