Allah knows what is the best for you!
So when Allah Subhaanahu wa Ta'ala , in His Infinite Wisdom, tests us with a situation that we think is difficult or takes away something that in our mind was good for us, we need to remember that perhaps it may not be so. Perhaps if we had continued in our way, it might have been harmful for us and whatever Allah decreed for us is actually better for us, for He is All-Wise and All-Knowing. Allah says:
'...and it may be that you dislike a thing which is good for you and that you like a thing which is bad for you. Allah knows but you do not know.' (Surah Baqarah: 216)