In this materialistic world, even a kind thought like this is appreciable. I am sure that at the root of this thought must have been your family values.
I have been doing it for decades (rendering free legal advice). At times, I have faced the following practical problems :
1. Hindu Shastra (holy books) says that whereas it is a punya (good deed) to help the su-patras (those who deserve it), it is simultaneously a paap (sin) to help the ku-patras (undeserving ones). [This is so because when you divert the resources which you have earmarked for the deserving ones, inadvertently to the undeserving ones, you do not give to deserving ones what you had capacity to give to them]. Therefore, you will have to be very careful while deciding who is the deserving one.
2. Another maxim that comes into play is "Ghora Ghaas se yari karega, to khayega kya?" (If the horse befriends the grass, what would it eat?"). Therefore, you will have to maintain a careful balance between the the paid and free work - also because out of the paid work you can help more deserving people.
3. When other persons to come to know of your kind-heartedness, it is not very long before they start crowding you (word of mouth travels at great speeds !), think of you as an exploitable emotional fool and start "using" you. Do not let that happen. [Sometimes, instead of actually helping others, all that you should do by way of a substitute is that let listen to them sympathetically, let them cry on your shounder, offer them a cup of tea, pat them and then say that you are unable to help (even if you are able to).
Having said so, I would also hasten to add that none of the above means that you should not help the needy. Do it, but make sure that the person is really needy and by helping them you do not soon come into need yourself. This Earth needs people like you - that is what makes is livable.
I hope the above helps.