The universe is designed in a way that if you bother someone, you will certainly be bothered one day. Some people are always complaining about their troubles, they must think and find the answer in what they have done before.
إنَّ اللَّهَ لَا يُغَيِّرُ مَا بِقَوْمٍ حَتَّىٰ يُغَيِّرُوا مَا بِأَنْفُسِهِم
God does not change the condition of a nation unless it changes what is in its heart.
Al-Rad (The thunder)- verse 11