Tired Retired Tiresome Tireless ?

With regards to serving Christ, which of these four words describes me?
As shared by Unc Hoi Meng in GG on 29 Jul, it has given me encouragement to go on.

Although sometimes we maybe Tired, and matters and effort can be Tiresome, we'd think its time to be Retired. But no, we must continue to be Tireless. Christ remained faithful and Tireless till the end - for me, for you. And we can be sure that in times when we are weak, God whispers to us, "My grace is sufficient for you, my power is made perfect in weakness." 2 Cor 12:8