Spreading oneself too thin is a common problem for many people, especially those who tend to overcommit. However, there are many ways to express this idea without using the same tired phrase. For example, you might say someone is stretching themselves too thin, taking on too much, or spreading themselves too far. Other options include trying to do too many things at once, being too ambitious, or juggling too many balls in the air. No matter how you choose to phrase it, it's important to recognize when you're overextended and take steps to reduce your workload and focus on what's truly important.