single mom working two jobs

If you are single mom with two job how do you juggle your jobs and children? I just got a second job because i needed the extra income. I'm afraid that i wont have enough time with my lo., and that i will be to exhausted to even keep both of them. Also this is kind off topic but is there any programs that could help with daycare, i have a sitter but i know it can be tiring for them to watch my lo at times.