1 Thessalonians 5 - What to do waiting for Jesus return?

Imagine a church very focused on Jesus return. The focus is on the future where things will be changed: there will be a reward for those who believed in Jesus as the Messiah whereas there will be a punishment for those who rejected the gospel. The problem is that too much focus on the future may imply in a bad behavior in the present. For instance: why work? why build new things? why improve in life? In chapter 5, Paul addresses the problem: What to do waiting for Jesus return? In resume, we are to live the life that reflects the life that the Lord designed for us.
We are to have communion with the Lord through prayer, and to grow as a community that loves the Lord:

13-15 Get along among yourselves, each of you doing your part. Our counsel is that you warn the freeloaders to get a move on. Gently encourage the stragglers, and reach out for the exhausted, pulling them to their feet. Be patient with each person, attentive to individual needs. And be careful that when you get on each other’s nerves you don’t snap at each other. Look for the best in each other, and always do your best to bring it out.
16-18 Be cheerful no matter what; pray all the time; thank God no matter what happens. This is the way God wants you who belong to Christ Jesus to live.

In a way, this life is about to bring the kingdom of heaven to earth.