"Good Books, like good friends, are few and chosen, the more select, the more enjoyable." -Louisa May Alcott
People may have the topic of gain at the forefront of their minds but hardly few talks about preserving what they have. When you are around people with negative minds rather through books, conversations, and music you must preserve your mindset by protecting it from negative influences. You can't choose your parents but you can choose your friends with precision. The better you are at organizing a reliable team of helpers and support the better you increase your chances of winning. 

Don't get lost in the possibilities of gain until where you don't see the poison around the water you are thirsty to drink.

Be mindful of who you associate with because a healthy person can't make a sick person healthy; they will most likely get sick themselves. In reality, thoughts are fluid and you must preserve your mind or lose out on the value of future gain. We don't have time to read every book and cater to everyone, in fact, that would be undesirable.

Only consume relevant information that will benefit your particular situation. Design your life with solid qualified people that can benefit you. If they can't benefit you or if the information is not relevant to your situation. Don't waste time, replace with knowledge that will benefit you. Choosing wisely will separate you from the losers who waste time on general information and can't make the decisive decisions to win.