In this case we consider another person beauty and then start comparing their own then these kind of psychological push comes to you. Once you saw beauty in yourself then always not go less than that but you can see increment where. This is unwanted bad act comes to you and consequence give you lot of trouble towords getting grateful. Frist what ever we are their own worth work for you so always make desire to see beauty in physical as well as your act beauty. You should go for work what you want to improve but never create such thinking so you feel less energetic what you are gonna do. You should admire your act whatever you are then you have desire to approach beautiful things to acheive. Another factore should not push you it's not matter how much really those things is beautiful. Self motivation is only act you can carry in yourself with keeping lot of conciouseness wherever you feel I am less than deserve.