Love with no hope of material gain should be our goal in our dealings with people. People know we are commanded to love God and one another:
Mark 12:30 And thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind, and with all thy strength: this is the first commandment.
Mark 12:31 And the second is like, namely this, Thou shalt love thy neighbour as thyself. There is none other commandment greater than these.
These are the words of Jesus himself, when the pharisees asked him what the greatest commandment was. So knowing that, we must examine our dealings with each other and determine if we only do things for each other in hope of gain, or do we do it to seek to do good for one another.
Now obviously we do need things, and at work you do things for gain, but that is separate from how we treat our family, or friends, or a neighbor, or even a stranger. Also do we pray and worship God hoping He will reward us material things? It is best not to ask too much out of God for physical needs, He does provide them but if you do place all your attention on them your focus will be about what He provides you. I would be sparing in that area of your prayers.
We must take to heart this scripture in my opinion:
Acts 20:35 I have shewed you all things, how that so labouring ye ought to support the weak, and to remember the words of the Lord Jesus, how he said, It is more blessed to give than to receive.
Thus we should be liberal in our prayers for others, we should seek not to take, but to give to them. When we do so God will reward us as He sees fit. He who is ultimately good shall reward us better than anyone in this world can.
Luke 6:38 Give, and it shall be given unto you; good measure, pressed down, and shaken together, and running over, shall men give into your bosom. For with the same measure that ye mete withal it shall be measured to you again.
So love others will no intention of being rewarded by men, but wait patiently on the Lord, He will reward and abundantly so.