Hi Timothy! (2 Timothy 1)

Personal letters are great as they bring out behind the scene details that are overlooked in the book of Acts.

Paul seems to be writing from Rome as refers to someone searched for him while in Rome (v. 16-17, Onesiphorus)

We also learn personal details about Timothy.  In particular, his grandmother is named Lois and mother is Eunice.  (v. 5).  These women were of great faith and Paul hopes that Timothy follows in their path.

Like 1 Timothy, Paul refers to a Holy Spirit gift that Timothy has.  He encourages Timothy to "fan" its "flame".  (v. 6). We still do not know what exactly it is, but since Paul mentions it right after discussing Timothy's sincere faith, that might be the gift, or it is at least linked to his faith.

Paul feels abandoned.  Paul mentions people deserting him, specifically "everyone from Asia" and he names Phygelus Hermogenes.  (v. 15).  Who is "everyone"?  Is this hyperbole?  I suspect it refers to many of the leaders of the churches in Asia (modern-day Turkey) or possibly the people who traveled with Paul.  I don't think it means complete abandonment by all the churches in Asia.  In fact, a number of the churches of Asia show up in John's epistle to them, which we know as Revelations.  These include Ephesus, Pergamum, and Thytira.  (Rev. 2:1, 12, and 18, respectively).

Rather, I think Paul feels abandoned by everyone from Asia he expected to come to his aid.

Why are they abandoning him?  A clue might come from his discussion of Onesiphorus.  Onesiphorus was not ashamed of Paul being in chains.