When you're trying to address a problem, you may sometimes feel like you're not making any headway. This is where synonyms for the phrase "focus on a problem" can come in handy! One option is to say that you're "attending to the issue" - this emphasizes the importance of paying close attention to all aspects of the problem. Another possibility is to say that you're "zeroing in on the problem"; this implies a more laser-like focus, honing in on the specific issues that are causing trouble. Finally, you might say that you're "dedicating yourself to resolving the matter" - this emphasizes the importance of staying committed to finding a solution, no matter how challenging it may be.