1Corinthians 4:1-2 Let a man so account of us, as of the ministers of Christ, and stewards of the mysteries of God.
2 Moreover it is required in stewards, that a man be found faithful.

In this teaching, being a good steward means taking care of what God has given to you.

God doesn't look at things the way we do

Isaiah 55:8 For my thoughts are not your thoughts, neither are your ways my ways, saith the LORD.
9 For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts.

Notice:

Luke 16:10 He that is faithful in that which is least is faithful also in much: and he that is unjust in the least is unjust also in much.

Luke 16:11 If therefore ye have not been faithful in the unrighteous mammon, who will commit to your trust the true riches?

Luke 16:12 And if ye have not been faithful in that which is another man's, who shall give you that which is your own?

God looks at faithfulness. If I am not faithful in a small matter, then I am not faithful.

Several years ago I gave a man a study Bible that I worked with. A few days latter I noticed it on the floor of his car, ripped, torn and half buried under tools. Do you suppose that I ran to the store and got him another one?

Around 25 years ago I sent my daughter to the grocery store right next door to our house. I gave her twenty dollars to get a three dollar item. She came back home with my item but also a bag full of other goodies. I learned not to entrust her with a large amount of money until she was a little older.

One aspect of stewardship and faithfulness is that you can be trusted. Can God trust me with more riches? Am I skipping church so I can ride in that new boat? Try out those new golf clubs? Have I allowed God's blessings in my life to push God in the background? Just why do I want that new this, or that, or those? Is it to impress my friends? Is it to compete with my neighbors?

James 4:3 Ye ask, and receive not, because ye ask amiss, that ye may consume it upon your lusts.
4 Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore will be a friend of the world is the enemy of God.

Just Maybe

You haven't got that new job because you're not faithful to the one God has given to you.
You haven't gotten that new car because you won't even check the oil on your old one etc.
You haven't received that gift of the Spirit because you're setting on the one that God has already given to you..

Sometimes Christians are not blessed because of the way they take care of things.