עַל כֵּן קָרָא שְׁמָהּ בָּבֶל יא ט
Nothing Makes You Weak Like Worries
Hashem confused these people by giving them a different language, and this stopped their evil activity to rebel against Hashem and build the tower of Bavel. This is also like a Mashal in a person’s private life; if he is confused and full of Da'agos (worries), he gets weak and dysfunctional. My brother-in-law, R' Mordechai Feder Zatzal told me that nothing makes you weak like worries.
Many times I was extremely tired and/or weak, and I sat and learned Shaar HaBitachon for half an hour. Suddenly I have more Koach and spirit, and I sat up on a normal chair instead of a sofa. This is why learning Shaar HaBitachon is so precious! You become alive and happy when you dismiss and are M'vatel those silly Da'agos (worries), and you fill your brains up with happy dreams of a good future even if they are far-fetched.