When we are uncertain about the future, it's difficult to handle it. Especially if it's about loved ones or a job or something you care about. Because of the uncertainty, we think about different pathways and scenarios. That's very time consuming and stress causing.
The best way to combat it is to cut down the time frame. Only think about what can you do in the next minute or next hour or the next day. Something you can manage and handle. Something you can work towards the desired goal. I have learned this from Mr Jordan B Peterson. Works well if executed properly.