The Answer Is in Your Hands

There is an story about a wise old man in a village that always seemed to have the right answer to every situation, and to every question. One day, a young man decided to challenge the old man, and prove that the wise man was not so wise. He held a songbird behind his back, and asked the old man to say whether the bird was alive or dead. The plan was, that if the old man answered dead, then he could produce the live bird, and prove the old man wrong; but if the old man answered alive, then he could wring the bird's neck, and produce a dead bird, again proving the old man wrong. The old man looked the young man in the eye, and said, "The answer is in your hands."
Many times we fret about what we don't have, and don't pay nearly enough attention to what we do have. In 2 Kings 4, there is a story about a widow woman, the survivor of a man that was faithful, who has two sons, and a great deal of debt. She asks Elijah to help her, and he asks her what she has. She tells him that all she has is a pot of oil. He tells her to go and borrow vessels from her neighbors, as many as she can get, and pour the oil into the vessels. She filled all of these vessels, and still had oil in her pot. She sold the oil, paid the debt, and then returned the borrowed vessels. God has a way of making the things that we have stretch to meet the need.
In 1 Kings 17, there is a similar story with Elijah the prophet and a widow woman who had a little bit of meal in the bottom of barrel and a small portion of oil in a cruse. Because she was faithful, and prepared food for the man of God before feeding her son or herself, God blessed the barrel and the cruse, and they didn't give out until after the draught ended.
Let me add a cautionary note. I know that there are "ministries" out there that will implore you to trust God, and give to their cause more than you can really afford. I would implore you to trust God, and follow His leading. If He leads you to overextend yourself to support a ministry that you believe in, that's one thing; if a ministry pressures you to overextend yourself to support them, that's a very different thing. If you follow God, you can't go wrong, but there are an awful lot of people that claim to represent God, and are trusting that they will never have to give an account for what they have asked of you. Not only are they putting their trust in the wrong things, they are asking you to, as well. If the blind lead the blind, they shall both fall into the ditch, but you don't have to be blind. The book of James says that if any man lack wisdom, let him ask of God, who giveth to all men liberally, and upbraideth not. If it comes down to a choice between paying your light bill or giving to a ministry, well, if it's of God, then God will find a way to pay your light bill, but if it's not of God, then you're going to be sitting in the dark, wondering how God could let this happen to you (but if you had sought God about it, He would have warned you not to give that money to those people). Don't sign your light bill money over to some preacher unless you know with absolute certainty that it's what God wants you to do (It’s okay to fleece the Lord, Gideon did it).
God can do a lot with a little, and sometimes we feel that we just don't have enough. If we let God have His way, though, a little can be plenty. Just as Jesus said that if you have faith as a mustard seed, you can move mountains, so can you do a great deal with just a little time, or a little effort, or a little bit of money. Remember the widow with the two mites? It didn’t seem like much to the disciples, but God saw how much it was to her—it was all she had. Pray for God's direction, and the leading of His Holy Ghost, and He can make a lot out of whatever little you have, too, provided that you are willing to use it for His glory.