Intrusive thoughts can certainly be unrealistic thoughts and as such end up working against you.
I'm 66yo and about 35 years ago my anxiety went to a higher level over a workplace incident. I went to therapy and got some truthful advice, comments like-
- Tony, you're too black and white in a world of 8 billion grey people
- Worry only produces ulcers
- Try connecting with the inner person of people before you judge badly
- With intrusive thoughts, ask yourself- "is that thought realistic "? If not, move on.
So, therapy could work wonders for you.
Anxiety, is a serious illness that isn't easy to counter. It might well be short term but it could go long term.
Please google the following and read the first post of each-
Beyondblue topic anxiety, how I eliminated it
Beyondblue topic worry worry worry
Beyondblue topic fortress of survival (workplace)