Time. Investing your time with a child can be the greatest act you do for your future. You won’t see the dividends now. The impact is seen much later.
Consider — who spent time with you as a child? What good memories do you have from that experience? Pass those memories on…
No matter how hard the day (or night), or how many times you’ve put together that Duplo/Lego, or cleaned up after an old-fashioned board-game, your time is worthwhile when it’s invested in your child. Even a few minutes are good for that child. The minutes add up to hours… and hours together are a great investment.
The memories you’re making together are never wasted. It might feel futile now, but it’s not. Really.