HOW TO MANAGE DISAPPOINTMENT

I know how hurtful it's when somebody promised to take you to heaven,but failed to do so(lols..).Conclusively,many a promise had been made to you but those that promised failed 'woefully' to see to their promise.Sincerely,I know that unfulfilled promise do cause emotional and psychological disorder.Have been through many of them,and I really know how painful it's.
The bitter truth is that,you'll always create hatredness for the person because of his/her failure to keep to the promise made.Am telling you,anytime you see the person the memory of what he promised will instantly sounds in your cranium.That's normal anyway.
However,being a victim of unfulfilled promise(s),I've changed my ideas about this reocurring decimal.So,I'll do well to discuss this from a general point of view and give a concise way forward to it.
At a point in time,I arrived at this logical conclusion that 'Human beings are the best disappointing instrument in life' and reasons for that need no further analysis.
But to avert being hurt,don't expect much from people,at the same time see them as a human being that's not sufficient and vulnerable to failure.
In most cases,the person may want to help,but due to some unexpected personal responsibilities,s/he must carefully reconsider his scale of preference leading to the lost of what he promised you.
Don't hate the person for disappointing you,but love them because they're not God.If it's God,you can be confident that he'll do it.The sincere question here is this;how'd you be able to define man better than God,if your demands by the man is met always?
Agree to the fact that you and I are limited,it's only God that's not limited.You can equally help the person with prayer that God'll strengthen him/her to fulfil the promise.
The fact that they failed you does not mean that they can't be of further help to you in future.Joseph would expect that the guy he helped would announced him instantly to the king but it wasn't so.It was after 2 years before the guy remembered him.What'd you expect Joseph to do in those 2 years? To hate the guy or commit suicide? Of what help would hating the guy do him? Activities in the palace might even choked up the guy to have time remembering Joseph.That's the same story of some that weren't able to fulfil the promise made to you.They've forgotten that they promised you.Don't waste time hating the person.
By way of conclusion,God expects you to put your trust in him,not in people because it's impossible to look up to the sky and to the ground at the same time.The simple formula is that;if it works,thanks to God,and if not,thanks to him also, for all will always together for the good of those that love God.
Trust more on God because He'll not fail.
@IscAmao.