Expectation leads to disappointment. If one thing is learned from the past and present, looking at relationships and bonds, one thing is clear; the more you expect the more likely you are to be disappointed. Parents expect their children to be a certain way and many a times children expect their parents to be a certain way. Constant comparison with other relations and individuals starts poisoning what could have been a perfectly normal relation. Have ambition and be persistent, and only have expectations from you not other people.