many ways have been discovered by humans to hurt themselves.one of those ways is to feel insecure about self. we often feel that when we see someone doing better or sometimes the more we fall in life the more the insecurity peeps in. this might not apply to everyone. it is just that at times we do not realize it. try and see if u are insecure about something and if you are then try and make the heart feel secure.
* picture courtesy Google