The most effective way I've found to deal with that particular anxiety directly uses a simple, free tool: a money task list. It should be a list of things you can do at any time. (If the task seems too overarching like "pay off loans", then the practice is to break it down until it's granular enough to be a single thing you can do in the time you have.)

This is an ongoing task list you create related to tasks that will directly increase money flowing your way. Any time you feel the anxiety, turn to the list and do something from it. The active effort --doing something to directly address the source of the anxiety-- has worked wonders for me personally; YMMV.

For the money task list, your career will be the obvious big one. Depending on how you're paid tactics will differ, but the strategy is to make the most efficient use of your time and effort as possible. So the task list can include specific steps you can take that will help you advance at work, lay the foundation for getting a raise (training, self-study, projects), make your commute more efficient (like knocking off errands en route), etc. If you don't have any idea how you could currently advance at your job (or what kind of jump you'd need to make to do so), then your task will be reviewing your options and coming up with some possible plans --check job boards, polish the resume, etc.

But other things help, too. The most frequent economic decision people make in their lives are the food related ones; these happen multiple times per day. So get organized about your food budget. Cooking cheap & healthy food saves you money in two ways: it's much cheaper than eating out, and it also saves you medical expenses by being usually healthier. Meal prepping --big batches of stuff that will freeze for future use-- helps even further by saving future time.

Scrutinize your recurring accounts, and look for alternatives. Shop around for better insurance deals, they shift frequently.

Etc. Some stuff will be recurring, like a weekly review of new job postings. The trick is breaking each of of these suggestions into specific steps, something you could do after recognizing that your massive pile of student loans remains outstanding, taking a deep breath, and doing something --anything-- about it.

So when the anxiety hits in, tackle some task on your money task list, and keep at it until the anxiety passes. Hth.