Life
Life is always full of problems, and I too have my share of it. These are meant to strengthen us - our faith and character. The soul in its wisdom chooses the life in which it can best evolve spiritually. So instead of bemoaning the past karmas, fate, et cetera, it would be better to be grateful for the situations that aid in our spiritual growth.
Taken from the book "The Spider's Web, Vol. 3", Chapter "In His Footsteps", pg. 236, by Revered Chariji