Following the death of his father, Thalia spend most of his life providing for his family. Resulting in him gradually losing himself, including his life.
Unfortunately, the second chance he got for being an otherworlder is not so different. As he starting to regain his self awareness, Thalia also found out the terrifying similarity in his life progression with how his original life turns out.
Such revelation threw him into a spiral of desperation all over again, as his memory start to merge and blur together with the amount of similarities in between the two.
Thalia ended up spending most his days in this new life struggling to remember, to not forget the faces of those he love, to remain as himself.