Here's a tweet for you that will get people excited about investing:

"Ready to turn your hard-earned cash into a thriving portfolio?  Investing is the key to building long-term wealth and securing your financial future. Let's make those dollars work for you!

This tweet is a great way to encourage people to start investing by highlighting the benefits of building a long-term portfolio and securing their financial future. However, it's always important to remind people that investing involves risks and should be done with proper research and education.