Quick answer: use one sentence for context, one sentence for what you did during the gap, and one sentence that proves you can deliver in this role today.
Keep the gap explanation short and factual
You do not need a long personal story. Give a brief context and move quickly to what stayed active: projects, training, freelance work, caregiving routines, or community commitments.
Show current readiness, not just past reasons
Hiring managers care about risk now. Add one concrete signal that you are ready to contribute today: recent outcomes, refreshed tools, or consistent work habits.
Avoid apology loops and defensive language
Phrases like sorry for the gap or I know this may concern you weaken credibility. Replace apology with ownership plus evidence.
Prompt
Rewrite my cover letter with a concise employment-gap explanation. Use one sentence for context, one sentence for what I kept building during the gap, and one sentence that connects this to the role's immediate needs. Do not overshare private details.