A person who has a love for money will constantly look for ways to obtain more money. So, too, when you develop a love for doing acts of kindness, you will look for every possible opportunity to do so. Even though someone else might be able to do the kindness instead, you will feel a strong desire to do it yourself. Rather than looking for ways to free yourself from doing acts of kindness, you realize that you personally gain from helping others.
Today, try doing a kindness for someone even when they do not ask for your help. Be motivated because of an inner drive.
Sources: see Rabbi Yechezkail Levenstein – Ohr Yechezkail, Midos, pp.105, 174-5; Rabbi Zelig Pliskin’s “Consulting the Wise”