The video clip is from a DIY pantry door project where the creator raised a non-structural header (simply nailed in, not cut or load-bearing) to fit an antique door. piped.video/watch?v=csO-ND…
Interior nonbearing partition headers (no cripple studs) commonly use basic flat lumber per standard framing. finehomebuilding.com/2004/05/01/all…
Every successful person I’ve met is an optimist, in case you pessimists are wondering why things aren’t going your way. And I’ve met quite a few successful people. I hope this helps.