Rage is caused by a conviction, almost comic in its optimistic origins (however tragic in its effects), that a given frustration has not been written into the contract of life.
There is no formula for generating the authentic warmth of love. It cannot be copied. You cannot talk yourself into it or rouse it by straining at the emotions or by dedicating yourself solemnly to the service of mankind. Everyone has love, but it can only come out when he is convinced of the impossibility and the frustration of trying to love himself. This conviction will not come through condemnations, through hating oneself, through calling self love bad names in the universe. It comes only in the awareness that one has no self to love.
The real thing is that you are suffering from your expectations. When they are not fulfilled - and they are never going to be fulfilled - frustration arises, failure arises, and you feel neglected, as if existence does not care for you. Drop expectations for the future. Remain open, remain available to whatsoever happens, but don't plan ahead. Don't make any psychological, fixed ideas about the future - that things should be like this - and much more suffering will disappear.