Self-Esteem and Me!

Sarah
Hi ladies! 
We all feel it. Self-Esteem issues. I am very bad about it and I don't know how to handle it. Maybe this isn't the place to post this but can I get some advice about how to over come self-esteem and body image issues? I have a boyfriend and says I beautiful but still when I look in the mirror I see a fat girl with no personality. Help?