What ever you do it will return to you sooner or later.
So you wondering about future ? Think about what you do today.
You put out bad actions you receive back bad sooner or later you put out good actions you receive back good sooner or later there is no exacly time but when it's right time you always will receive.
And when we look at someone and his/her history of actions it all make sense.
If we all keep this in our minds then success and hapiness can happening more often in our life.
These words are inline with some religious teachings. It is believed that whatever you do in the present will determine your life in the future. Some religions also teach about life after death. It is believed that the unrighteous will be punished with suffering and destruction, while the righteous will enjoy eternal life in the afterlife. I guess this is why most religious people always want to behave righteously to avoid these future pains.
I have my own belief about life, which is I don't do to others what I don't want them to do to me. If you know what will harm your neighbor or cause him pain, we have to avoid it. We should always show empathy in everything we do because nobody deserve to suffer. If we have the consciousness that life is a seed, we will be careful about how we behave toward others. If corrupt politicians who engage in the stealing of the country's commonwealth know that their evil will return to them, they behave well.
Recently, the son of a former president of a country was caught with some people when they were burgling a house. His father might have acquired much wealth for him, but he might have squandered all of it. If they know that all these funds they are stealing will be wasted, they will govern the people well. A former president of my country who stole so much money is now suffering from blood cancer.