When my why is strong enough, my how always appears.

A strong why doesn't summon a method. What it does is keep you searching after the first three methods fail, and that persistence is what people later mistake for the how appearing on its own.

Watch who actually gets up at five. Rarely the person who wants to look better. Often the person with a sick dog that needs medication at dawn. The reason isn't more inspiring, it's more specific, and someone else depends on it.

If your motivation feels thin, the trouble may be that your reason is still abstract. Make it smaller and more particular, then see if it holds weight.