1)
What is the meaning of "v'Sorascha b'Soch Me'ai"?
1.
Rashi: Even what I eat is according to Your Torah.
2.
Radak: Your Torah is in my heart; my thoughts do not veer from it. The heart is included in "Me'ai" (innards).
3.
Malbim: I myself want to do Your will. My nature wants to show You that I appreciate the good that You do for me. I need not look to the Torah to find this - it is in my innards, conscience and intellect.