Okay thank you for this.
So with anxiety there are a number of options. The first option to help improve this is Psychotherapy. Cognitive Behavioural Therapy is good to improve anxiety and a method to learn how to manage it more.
There are also medication options. If anxiety is a problem all the time, then an SSRI, which is an anti-depressant is a very useful drug which has very good supportive evidence. They are considered safe, can be used for months, to years, and can be stopped at any point.
If anxiety is situational then beta blockers, propranolol is useful, but more so if this is when you know the anxiety may be provoked and therefore you can take it before hand.
Finally is Generalised Anxiety Disorder, Pregabalin is now a good option for this.
Obsessions certainly do fit in with all of the above, but the psychological treatment may differ slightly.
I hope this is of some help, please do feel free to ask any further questions.