Here’s a grammatically improved version of your text:

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For me, it's about offense and defense.

I DCA into Bitcoin.

That's my offense.

What is the defense? It's the ability to protect your Bitcoin—not just through self-custody or cold storage, but by staying solvent so you don't dip into your stack.

By any means necessary, do not dip into your stack.

It's easier said than done, I know. Like most people, I feel the fiat squeeze—everything is so expensive. It's a literal battle to avoid dipping into your stack and to keep stacking.