I just kept getting lost and having an org agenda with missing files, so I just have the one file and my org agenda pulls up all the TODO’s I have from across 1

I just kept getting lost and having an org agenda with missing files, so I just have the one file and my org agenda pulls up all the TODO’s I have from across 1000’s of lines. That way I am sure if my org agenda adds anything then I have everything in one place (since its one file its all or nothing)