We often only think of being a blessing to others financially. We tend to forget there are other ways to "bless" someone. When you listen, truly listen, to the voice of God you will be led to do what needs to be done. It's that simple.
God will lead you to the person(s) who needs that 'how are you today?'. He will lead you to that person(s) who just needs a 'I was just calling to check on you, haven't seen you in a while'. God will send you to that person(s) who has "shut down" for all intents and purposes, that person(s) who is just fed up. He will lead you to that person who is so hurt they feel like it's not worth it anymore. And He will give you what to say, how to say it...in that way that person(s) will receive it.
The blessing is in the fact you heard God, and you moved on His behalf to do whatever is/was required. You're being a blessing when you pay attention to the needs of others regardless of what they are. Your "blessing" doesn't have to be a financial one, it can be anything as long as you "bless" the way God intended!
Ask God to help you to hear and see what "blessings" are needed so that you can be blessed to be a blessing...a true blessing.