It can be whatever you need it to be if it is soothing to you. If you let those worries come and acknowledge them instead of trying to hold them back, you care for yourself in the way you need to be cared for. Just keep breathing in an even way and examine the worry. Is it something that needs to be taken care of or no? Make note of it as a “for later me” thing and return to focusing on your breath and the task.