Welcome back Mario.
I too went through a phase of not playing for about 18 months (medical issues).
IMO you've already mentioned the key to motivate yourself to play again...
...mario... wrote
Otherwise I stopped playing round about a year and a half ago, work keeping me too busy, but it keeps on niggling in the back of my mind to dust the old 6stringers off (especially when I hear those songs I never quite mastered :? )
I wouldn't go so far as the-songs-not-mastered-yet stage. Main thing is to continue to listen to music you enjoy and hopefully let it inspire you to pick up your guitar.
Good luck!