Tesla shares TSLA.O rose 8.3% after Chief Executive Elon Musk told staff they should not be "bothered by stock market craziness". By Ankika Biswas and Amruta Khandekar Dec 29 (Reuters) - Technology and growth stocks lifted Wall Street's main indexes higher on Thursday after data pointing to signs of a cooling U.S. labor market eased worries about future interest rate hikes by the Federal Reserve. A strong labor market and the resilient American economy have fueled worries that interest rates could stay higher for longer even though easing inflationary pressures have kept the hopes of smaller increases alive.