Do you believe like is costing you too much money? It could be more an issue that you are using up your money on gas instead of the things you really want rather than being able to afford it. What can you do? I'm sure you try to group your trips together, carpool whenever possible, and drive slower, but you may have missed another great tip.
Do credit cards make up a major part of your spending? Saving money on gas is even easier if you use a gas cash back rewards credit card. You probably know about rewards credit cards if you have ever owned credit cards before. Many credit cards give rewards for using their cards either in the form of cash back, points, or miles. You might be rewarded on a point or mile per dollar basis, or a percentage of what you spend.
The gas cards will let you get a certain amount of cash back on whatever you spend on gas. For instance, if you get 5% cash back on gas purchases and you spend 200 dollars a month, you'll get $10 back each month. That small amount can really add up fast if you keep using your card on gas purchases. If that's not enough, most gas cards give cash back for other purchases too which is usually a smaller percentage.
Be smart when you use your credit card. Don't be a careless spender. If you charge $200 to your card on gas and get $10 back, that won't mean much if you have a high interest rate and carry a balance that gets bigger and bigger each month. You'll still end up owing more than you receive back. Make sure you always pay off your balance in full each and every month if you really want to get the benefits of the card.