Thanks RTWolf

I consider ALG as being much more advanced than I am in LoA things. But actually we're saying almost the same. I'm not against taking action, I'm just against intellectually deciding myself which action I should take. I'll try to put it in a nutshell:
ALG says, if there is a well known conventional way, use it, and use the LoA as aid and tool. Which means practically: do what you think is right while holding positive intentions.
I say, even if there is a well known conventional way, always use the LoA first of all. Which means: intend and wait for the universe to show you the way that is best for you.
If the best way for you is the well known conventional way, there is no difference anyway. That's not always the case (like for me to lose weight), (edit: and sometimes the well known conventional way can kill the intention IMO), but we don't know it, that's why I find it better to let the universe decide.
The reason why I never use willpower is that it just doesn't work for me.