The first drawback of anger is that it destroys our inner peace; the second is that it distorts our view of reality. If we think about this and come to understand that anger is really unhelpful, that it is only destructive, we can begin to distance ourselves from anger.
I feel optimistic about the future because humanity seems to be growing more mature; scientists are paying more attention to our inner values, to the study of mind and the emotions. There is a clear desire for peace and concern for the environment.
Instead of always thirsting for more, take inventory of what you do have. Be grateful for where you are. Then you can proceed into the future with confidence and patience.