I'll post as a follow-up, rather than edit my last. These are the preface and internal narration from Marvel Star Wars (2015) #7:
"While searching for answers in his quest to become a Jedi, Luke Skywalker has uncovered a journal written by Jedi Master Obi-Wan Kenobi, a journal that Kenobi specifically left behind for Luke to find. The journal details Kenobi's adventures during the time he was in hiding on Tatooine."
"[...] By the time of the Great Drought, it had been years since I'd touched a lightsaber. Years spent hiding on Tatooine. Years spent alone. I wasn't General Obi-Wan Kenobi anymore. I was no longer a Jedi Master. I was only Ben. Quiet Old Ben who lived far out in the Dune Sea, where nothing but womp rats and Tusken Raiders ever dared to go. Ben the forgotten hermit. Ben the relic. One day blurred into the next, with little to distinguish them. Instead of Sith Lords and bounty hunters, my days were spent battling monotony and inactivity. I should have been busier than ever. I should have been training the boy. But his uncle never allowed it. And I suppose there was a part of me that couldn't blame him. The last Skywalker I tried to train was gone. They were all gone. All the Jedi. And sometimes I wondered... if I should have gone with them. But I still had one job to do. And I did it the best I could. If I couldn't train the boy, I could at least keep him safe and hope there would come a day when he'd realize for himself that he was meant to be more than just a farmer. [...]"