Lose weight

I'd like to be slim,especially in summer,because I wanna (informal, but okay for a diary) wear a beautiful skirt and shorts. I believe many girls and women agree with me.There are many benefits to being slim. A slim girl can easily find a boyfriend or a job. So, losing weight is a goal for many woman. There are lots of methods to lose weight. Mostly, they can been divided into diet, drugs and exercise in my opinion. I think that a strict diet control is difficult because I like eating tasty food. I respect a woman who can control her diet every day. I think a proper diet and exercise is the best way to lose weight even though its effect may be slow. I'm on the way to being slim. I hope it can work.

Good luck with your diet. I hope you can continue to eat some tasty food. It would be tragic if you couldn't. 

Nice work, just remember to include spacing after periods and commas.