Some excellent advice has already been given so I will not repeat them but add this, do not expect to play like you did many years ago. I started guitar at 14 and never put it down. But guitar was my ad-vocation not my main job and there were periods of time that I didn't practice much, my wedding band played pretty much the same songs for about 20 years. So now that I am a lot older and with arthritic hands I do not play anywhere as good as I used to play.

Now when I am in a rut or writer's block I punch a few chords in BiaB and have BiaB generate a melody. Although it never generates the perfect song I always find phrases here and there that become my main themes.

But the main thing is have fun. Do not make this a chore, a must to do by next Friday thing. Strum and enjoy what you are playing regardless of how long it takes. Google/bing songs that you would like to play. Search song title chords and you will find chord progressions and words for just about any song that you have ever heard.

Good luck

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware