昔の自分
his former self―what he was
昔の自分と今の自分
The old me and the current me.
a traditional admonition from ancient times
はるか昔に
from ancient times
昔に.
大昔のこと
something that has had the same form from olden days into the present
the past
a feeling of resentment one has had for a long time
since long ago