23 and ready to CHANGE

Hi everyone. I am 23 years old (I'll be 24 in a month) and I have a 3 year old son.
I have always struggled with my weight since i was very little. Ever since I got pregnant with my son I gained weight. And after he was born, I could never get it off. I work full time & take care of my son which leaves me with no time for myself.
I am the heaviest I have ever been but I have never been more motivated in my life to make a change.
I want nothing more than to get my confidence and happiness back. I want to feel beautiful by my 25th birthday!
I would love some friends and support, as I have just one on this site.
Can't wait to hear from some people with similar struggles!