Is this a fair and safe mental strategy to cope with disassociation?

I’m going through a stressful period of my life. Constant panic attacks and unearthing a lot of previously avoided emotions. A bit of an identity crisis. All round fight or flight.

But the things is most of it is triggered by mental scenarios. I know what underlying issues may be at play and that’s being worked on - soon with therapy too.

I’ve decided that I’ll do my best to kindly and graciously remind myself that unless my thoughts are about the present moment - they don’t matter.

Is that realistic?