> Like it or not, you (yes, you) are a slave to your internal chemistry. No amount of willpower or happy thoughts will cause your hormones or neurotransmitter l

> Like it or not, you (yes, you) are a slave to your internal chemistry. No amount of willpower or happy thoughts will cause your hormones or neurotransmitter levels into the homeostasis you want. If your chemistry is off, your physical and emotional behavior will be off. It’s not that simple – there are feedback effects. There is plenty of evidence that thoughts shape chemistry as well. This is why therapy works, for example. edit: This is also why you can “hype yourself up” or “talk yourself down”. Those are thoughts/words leading to measurable physical and chemical effects in the body. You really can raise your cortisol just by thinking the right thoughts