Expectation

Make high dreams but never ever expect that must be fullfilled.If you ll expect from your dreams thn that ll attach u with that particular thing coz expectation creates attachment to that particular thing and if that expectation ll not be fullfilled thn u became wrath and thn every thing goes wrong.Lord Krishna says that "Do your work but never expect any thing from that nor do attach with the outer thinsgs.Detachment is very important."
kisine sach hi kaha he "sapne denkhna buri baat nahi he per ye sart rakhna ki yo pura ho ye galat he".