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Birds of a feather flock together.
Anthony robbins is always quoted saying that your income will be determined by the average five people you spend time time the most with. The people you spend time with really affect the kind of life you live and they influence your future. The reason is because as a group you share the same thoughts, ideas and philisophies.
Some people you can spend a few minutes with but not a few hours. Some people you can spend a few hours with and not a few weeks. In our daily activities we meet all kinds of people that we can't avoid. Some are our relatives, others are our colleagues but they are not valuable to our lives and future. It is advisable to spend limited amount of time with these people and don't allow their unlimited philosophies to affect your dreams and aspirations.