No matter how you look at it the very principle in itself seems odd. Why would there be any particular command of the Torah more important than any other unless it is explicit in the Torah itself that that particular command is primary?
In any case the idea of trust in God and learning Torah has enough support to be able to commit to this ideal.
That is it might make some sense to start trusting in God to take care of your needs. The idea of trust in God usually worked for me as long as I stuck with it. It is rather when I deviated from it that it did not seem to work any longer.
In a rather strange way some people emphasize the very opposite of what the Torah requires and yet do so under the guise of Torah Graves of tzadikm is one minor example see Deuteronomy 18:11. But there are many more strange examples.