Correction please: Not all investment is money or money-related. Investment is defined as an asset or item that is purchased with the hope that it will generate income or appreciate in value at some point in the future. Real estate is an investment and so is your house. Of course, we can include jewelry, gold and silver, cryptocurrency, art, antiques, paintings, private business, stocks, money markets, certificates of deposits, annuities, money markets, government bonds, and mutual funds.
An investment that is not money related and doesn't need you to buy anything is Time. Investing time is a good judgment call and that includes defining specific, measurable, achievable, relevant, and time-bound objectives that an individual aims to achieve. When you're committed to achieving specific goals, you'll focus your efforts on what's important and avoid wasting your precious time. Investing your time means engaging in activities that are calculated to bring you meaningful rewards.
If your specific goal is to be with family (quality-wise or quantity-wise) then you are a step in the right direction. Spending time with family allows you to develop valuable life skills such as family fidelity, obedience, commitment, and good communication. Children can build healthy self-esteem and learn communication skills and problem-solving and communication skills from their parents.