Part time work, over time, change of jobs, etc. Plan for the future too. Continue to improve your skills through education and o the job training. It may not benefit you now but it will pay off in spades in the future. Seek professional help.
Credit counselling is plentiful in most urban areas and is often free.
Once you have freed up some money, be sure you spend your new found cash flow very carefully. You should be saving for unexpected spending, a future home purchase, retirement, etc. I look back at all the dinners out, boozing and luxuries I afforded myself when I was single and wish I had done it differently. Remember, none of this will be easy but you will find it very satisfying to get your finances in order and to get the most bang for your buck. I can help a little here.