Assalamu alaikum wa rahmatullahi wa barakatuhu!
In the Name of Allah, Most Gracious, Most Merciful
You are making a big mistake if you think that life must always be one hundred percent in your favour. This is something that will only happen in Paradise.
In this world, however, happiness is relative. You will not get everything you want; there will always be some problems, sickness, adversity and trials.
So, be grateful at times of ease and patient at times of hardship. Do not be too idealistic and expect good health with no sickness, richness with no poverty, happiness with nothing to spoil your joy, a husband with no negative aspects, a friend with no faults.
That will never happen.
Learn how to overlook the negative aspects and mistakes, and look at the positive aspects and good things. Think well of others and make excuses for them, but put your trust in Allah only, because people are not fit to be relied upon or to have your affairs delegated to them:
Verily, they can avail you nothing against Allah (if He wants to punish you ..) ..
(Surah Jaathiyah, Verse 19)