I fully agree with you in finding it relaxing, comforting, reassuring that there is a purpose behind everything.
Everything Has a Purpose
Learn to get in touch with the silence within yourself, and know that everything in life has purpose. There are no mistakes, no coincidences, all events are blessings, given to us to learn from.
Elisabeth Kübler-Ross
Many difficult events in our lives seem unfair or meaningless, and we may curse our fate and wonder why these things happens to us. Often we spend much energy on pondering over this WHY, instead of going on with life as it is.
Drop unnecessary pondering. Learn to get in touch with your inner silence, be it through sitting or walking meditation, or in any other form. That is the most helpful thing you can do to calm down and see things in their true light.
It may sound strange, but I find it relaxing to know that everything in life happens for a purpose. That way I can let go of trying to control the events in my life, and take things as they come. I know that there is a reason for everything that happens, a reason that I may not see or understand in that precise moment.
Look back into your own life, and I am sure that you can already see several examples of the fact that many difficult events we have had to deal with turned out to be blessings...