He who believes in Me, as the Scripture has said, out of his heart will flow rivers of living water

John 7:38
He who believes in Me, as the Scripture has said, out of his heart will flow rivers of living water.”

This verse is more than a description of the blessings that will come to the believer. It focuses on the blessing the believer will become for others because out of him, water will flow to provide for other people's needs. This is when God makes us to become like Himself, just like He has poured and emptied Himself for the people and continuously get refreshed again. So we too are being molded in that fashion to enable us to sacrifice ourselves for others' sake.

For I am already being poured out as a drink offering

2 Timothy 4:6 
For I am already being poured out as a drink offering, and the time of my departure is at hand.

Following from the previous post about willingness of being a drink offering, this is about after being a drink and the trials that come because of it. How to we respond to such trials that come as a result our service to God? The thing to do is to steadfastly go through it without complaining or self-pity.

There may be various different suggestions to go through this such as hardening our wills, determined to follow through what we set out on doing and set our will to align with God's will. Also we should bring this back up to God who hears us. There are different ways to deal with this and there is no reason not to include God - the Holy Spirit as our supreme Councillor.