Welcome here to the Forum. I think you will find it is a safe and non-judgmental place with many here who because of their own experiences care about others and wish to help.
You are right in that if you have nothing to compare things by it can be hard to judge your circumstances and feelings. So far you have mentioned you are often feeling anxious, particularly about marriage.
I would really like it if you were to say more about yourself and your life. I could just give you generalized information on anxiety such as Beyond Blue provides here
and there is a lot there, on symptoms, treatments and more - however you deserve to have the things that actually affect you discussed
If you wanted to give more of an idea of you situation and feelings, and maybe the thing about marriage that is troubling, we would be able it talk with you about those things and perhaps be able to give you assistance based on our experiences where they are similar.
I hope to hear from you again