The worst thing about regular anxiety states is that unless you changed some of your core beliefs about the world, acquired in the past, you will go on being anxious. The events happening to you and how you interpret those events are two different things. In Indian philosophy these are called karma and guna, respectively. You may not have too much choice about karma but you do have a choice on choosing your guna, your mental state, including your beliefs about the world, your worldview.
It's not automatic that pain (karma) is transformed into suffering (guna). It might be that our belief is that pain is suffering, but if you talk to people who have mastered themselves such as yogis for instance, you can see that they are able to endure much more pain than an average person, without suffering.
The reason this is relevant for anxiety is that you can't simply brush off an anxious person's fears about the future as 'unlikely to happen', 'everything will be alright' etc, because in fact painful things will in fact occur and at the end of it all, the ultimate tragedy of disease and death for us and all of our loved ones awaits us.
But you can change how you see this pain and this can decrease your anxiety, by accepting it. Yes, bad things will happen to me in the future, and no, I can't guarantee that it will not be tomorrow. Accepting future pain is the first step towards making that pain less painful.