A Crab's key to building security is...
Your sign is one that loves to build security. Cancer wants to build a nice, warm nest to hang out in until they feel it's safe to go outside.
Sometimes, the world isn't like that, though. Rather than feeling that you have to risk it all, you may need to learn how to take some baby steps.
Time is Cancer's friend. The security you seek is possible, if you're willing to save your cash over time, develop love and trust in relationships, and even settle into a career that brings you log-term benefits. You're more than up to the task, when you take the long view.