Spiritually mature Christians adjust their attitude and mindset onward; they have a forward looking mindset. We are to follow Paul’s and other mature Chrisitan's example of making spiritual things a priority in their lives by developing an upward perspective.
Everyone needs examples. The Thessalonian believers were able to look at Paul, Silas and Timothy and then through difficulty, repentance, patience and God’s word they became the models for the entire region.