Do you feel like you have to do it all on your own?
Living the life of special needs is hard. It demands much mourning, weeping, and pain. It can seem unbearable at times. It is natural for us to want to work harder to fix the problem on our own. Nothing we feel here is different from what Paul felt.
Before he states the verses above he goes on talking about how his afflictions bring those who observe comfort because God comforts us and as He comforts us in our afflictions we learn to comfort others in their troubles.
From the verse above we see the point of the crushing was so "we would not rely on ourselves but instead rely on God." Wow, if only we remembered we could rely on God in the midst of our mundane continual pain. When we do this we are reminded that He is the One and only who can raise dead things to life.
And our hope is in Him for one day we will be with Him and see Him as He really is, until then let us keep looking into the good news of the gospel, His unstoppable love for us, and His promise to never leave us. We can do all things in Him as we keep our eyes focused on eternity.
Father help us not get bogged down on the here and now. Help us live and breathe with eternity in mind. Help us serve lovingly because you served us. Help us love because you first loved us. Help us to keep our gaze fixed on your face and use that to change us from one level of glory to the next. Help us to see you are enough.