Everything we do in life is for Our Self. Do anything; it is for your Self. Not for anyone else. Once you do something, you will expect some returns like:

• Satisfaction

• Monetary benefit

• Fame

• Whatever help you do, you expect same kind of help back

After doing each and every task in daily life, you are going to expect any of the above types of returns. If you do not get at least one of them, you will get disappointed. You will get returns after doing some task, may be immediately or sometime later or you may never get it.

Few examples (May be Bitter):

• You look after your parents, because you get satisfaction or you have some monetary benefit.

• You look after your brother/sister, because you get satisfaction or you have some monetary benefit.

• You look after your kids, because you expect them to look after you in your old age.

• You look after your wife, because you get satisfaction or you will expect the same from them.

• You help some of your friends, either expecting them to help you back sometime later or you will be expecting some monetary benefit or satisfaction.

• You help a stranger for satisfaction.

• You will help your co-workers for satisfaction or fame inside the company.

• You will help your boss for a promotion (or more incentives) or fame in the company.

• You will help your neighbors for satisfaction, so you can live a bit more happily with them.

• You will laugh with someone by expecting the same from that person.

• You will help some beggar because of your own satisfaction.

• You will help someone in their education and get satisfied or get the fame of helping people OR the returns you may receive from them in the long run.

In these examples, whatever I mentioned will be the most preferred forms of returns. However,  in some cases, it can be any other factors also. Most people will not get anything except satisfaction most of the time. You cannot be happy OR you cannot grow much mentally without doing work for getting just Satisfaction. This may also result in you being sad at times thinking of all the ingratitude you got for all help you extended. Whenever it is possible, try to think of doing some help for people only for the sake of the satisfaction that you are worthy enough to help someone and just enjoy that bliss. 

"Satisfaction is directly proportional to the number of people whom you help. If you help more people you tend to get more satisfaction"