Stories tell of people receiving divine strength to handle unhappy things:

• Paul prayed three times asking the Lord to remove one of his weaknesses that gave him trouble; he called it his “thorn in the flesh.” Paul’s trouble wasn’t removed but the Lord told him, “My grace is sufficient for thee: for my strength is made perfect in weakness.” Paul gloried in his infirmities and said, “For when I am weak, then am I strong.”
• Moroni was troubled about his weakness but the Lord told him, “And if men come unto me I will show unto them their weakness. I give unto men weakness that they may be humble; and my grace is sufficient for all men that humble themselves before me; for if they humble themselves before me, and have faith in me, then will I make weak things become strong unto them.” Then the Lord told Moroni, “because thou hast seen thy weakness thou shalt be made strong.”
• Many pioneers (children and adults) walked thousands of miles across America to colonize the west. They faced harsh weather, storms, illness, cold, heat, extreme climates, fatigue, hunger, danger, harmful strangers, and many more things (and we’ll never understand what they endured) but they had hope of a brighter future and several personal accounts tell of them receiving strength in many ways.

My weaknesses will most-likely remain with me throughout my lifetime but I trust the Lord’s promise that when I exercise faith in Him His grace strengthens me, beyond my own ability, to handle my troubles. (I know this is true and have experienced it many times.) One of my regular activities depletes my entire energy and is extremely exhausting but my recent experience gave me hope:

I took a bath today and the scripture about weak things being made strong went through my mind the entire time. (I didn’t think of the scripture it was just there.) Afterward I realized, “my bath wasn’t as hard today” and knew that, truly, the Lord strengthened me.