Passage
Thou therefore, my child, be strong in the grace which [is] in Christ Jesus.
Thou therefore, my child, be strong in the grace which [is] in Christ Jesus.
2 Timothy 2:1 Thou therefore, my child, be strong in the grace which [is] in Christ Jesus.
2 Timothy 2:2 And the things thou hast heard of me in the presence of many witnesses, these entrust to faithful men, such as shall be competent to instruct others also.
2 Timothy 2:3 Take thy share in suffering as a good soldier of Jesus Christ.
The verse centers on "grace", "thou", "therefore", "child", "strong", "christ", and "jesus". It is saying that salvation is received as God's gift through faith, so boasting is pushed out by the wording itself.
The next verse adds "And the things thou hast heard of...", so "grace" and "thou" should be read forward into that movement. In 2 Timothy context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "grace" and "thou" with trust shaped by these words, not by a vague optimism outside the passage.