Sci-guy,
VERY well said. Might I just add that Hashem gives us challenges so that we'll TALK TO HIM, to daven for help, guidance and strength. It's OK to feel up to the challenges and to turn them positive, but we must not attribute our strength entirely to ourselves. Only our will to do is ours, strength and success are His to give out as he pleases. We can only choose to fight the battles, we are not in control of whether we win. Fears also come to us, sent by Hahsem, so we can ask Him to remove them.
The beracha of "Shehakol Nehiyeh B'Devarov" said on foods that don't grow from the ground is followed by it's after beracha "Borei Nefashos Rabbos V'CHESRONON..." That means "Who has created many living beings AND WHAT THEY ARE LACKING..." Why are we first thanking Hashem for creating us with NEEDS, like the need to eat, and then finishing the beracha thanking him for creating all sorts of foods for us to fill that need? Wouldn't it be a bigger NEIS if he created us completely self-sufficient? The answer the Sages give is exactly this point - He created us insufficient SO THAT WE'LL NEED TO HAVE A RELATIONSHIP WITH HIM. So that we'll realize that only HE can fulfill our needs, and then ASK HIM FOR THEM.
That's why the punishment of the Snake, to "eat dust", is really a curse. His food is readily available everywhere he goes. Hashem is telling the Nachosh, "Here is everything you'll ever need. I never want to hear from you again!"
So when you choose to be strong, don't forget to ASK Hashem to give of his UNLIMITED strength to you, to fulfill his will.
Have an AWESOME and HOLY SHABBOS, my dear friend.