Chickens come home to roost, and so do your thoughts. Be careful what sort of thoughts you send out.
“The thoughts you send out to others will have a far greater impact upon you than upon them. Unlike a material possession, when you release a thought or give it to someone else, it also stays with you. It may remain buried in your subconscious long after your conscious mind has forgotten about it. Like chickens that return to the coop at night, such thoughts may flash into your consciousness when you least expect them.
When your thoughts are positive, you never have to worry about the damage you may do to yourself through negative thinking. Cheerful, productive, happy thoughts that are buried in your subconscious bring positive results when they recur, and by their presence they encourage the maintenance of a positive attitude in all that you do.” Napoleon Hill