How to overcome midlife career crisis?

How to over come feeling defeated and anxious as I grow older in tech field biased towards younger lot and shiny new tech stacks.

Worked in WITCH companies, no hope of getting into product based at 11 yrs exp.

I am no way extraordinary technologically wise nor got chance to work on complex projects just standard Crud apps on different tech stacks like Asp.net and SAP Fiori/Hana.

I shudder to think of being jobless at 50 with no job with no pension and max responsibilities on my shoulders at that time .

Can someone provide pointers how to come out of this rut? I would be grateful🙏🏻