$1,000 may not seem like a life-changing sum on its own, but how you choose to invest it can accelerate your wealth-building journey. The smartest move is to direct the money where it has the highest return on investment (ROI), not just financially but also in terms of security and future growth. Explore More: How To Start Investing With Less Than$1,000 Find Out: 8 Common Mistakes Retirees Make With Their Social Security Checks Here are the best ways millennials can make the most of that $1,000 before th ...