The Rebbe addresses doubts about tradition and Torah, emphasizing that scientific proofs are weaker than those for Torah, and such questions often stem from the yetzer hara. True commitment comes from faith and courage not to fear mockery. He urges strengthening in daily learning and turning to a local rabbi for practical halachic questions.
https://www.torahrecordings.com/rebbe/igroskodesh/015/009/5432