2 Corinthians 12: And lest I should be exalted above measure by the abundance of the revelations, a thorn in the flesh was given to me, a messenger of Satan to buffet me, lest I be exalted above measure. Concerning this thing I pleaded with the Lord three times that it might depart from me. And He said to me, "My grace is sufficient for you, for My strength is made perfect in weakness." Therefore most gladly I will rather boast in my infirmities, that the power of Christ may rest upon me. Therefore I take pleasure in infirmities, in reproaches, in needs, in persecutions, in distresses, for Christ's sake. For when I am weak, then I am strong.
Even in our infirmities, sicknesses, depressions, weaknesses, unfair situations and needs are a reason to boast in, that is to be proud of and rejoice in, Christ Jesus. These afflictions prove that we are loved and being made humble for His sake and so that we can see that we have nothing and never had anything and He is the Powerful One. When we see Him work despite our powerlessness, we , and others, see Him in a much greater light. He gets more glory.
2 Corinthians 4:7 – But we have this treasure in earthen vessels, that the excellence of the power may be of God and not of us.
Our weaknesses are a chance for us to recognize that 1) We are loved – only God’s children are disciplined to become stronger –
Hebrews 12:5,6 - And you have forgotten the exhortation which speaks to you as to sons: "My son, do not despise the chastening of the LORD, Nor be discouraged when you are rebuked by Him; For whom the LORD loves He chastens, And scourges every son whom He receives."
And also 2) Our weaknesses show that we can look to a God who is strong no matter what happens to us
Psalm 121:1,2 - I will lift up my eyes to the hills-- From whence comes my help? My help [comes] from the LORD, Who made heaven and earth.
SO we can boast in the fact that we suck. We can literally say, ‘I’m jacked up, I’m a mess, I can’t do this, I’m going through it; that means I can trust Jesus to be perfect for me like He SAID He would.”