Help please i am soo depressed?

I am really self concious. I am always looking in the mirror looking at my imperfection but especially my weight. I just cant stand how fat i am. i am 181 lbs and my height is 5'6. So, i feel depressed, and i feel ugly and jealous at people who are thin. I have almost 3 weeks that i have been eating healthier and almost 1 week of doing 1 hour of exercise(jump rope) everyday and walking another 40 min but walking is only sometimes. so i am doing something, but i feel like i am not going to lose any weight and i am going to stay fat. I noticed though that i feel better and a little slimmer and my mom also says that. I sweat a ton when i do exercise by the way. But, I feel depressed, and almost like living isnt worth it. I know physical appearance isnt everything but come on, we all want to look good, or be skinner.