What did dad do to make sure he wasn't?

It seems like your question might be incomplete. If you're asking about what a dad did to ensure he wasn't a certain way or to avoid a specific situation, it would depend on the context. Generally, a dad might take proactive steps like communicating openly with his children, being involved in their lives, or reflecting on his own experiences to break any negative cycles. If you can provide more details, I could give a more tailored response!