It's simply writing down your thoughts and feelings to understand them more clearly. And if you struggle with stress, depression, or anxiety, keeping a journal is a great idea. It can help you gain control of your emotions and improve your mental health.
When you touch something that is cold the sensory neurons in your hand send a signal to you spinal cord which sends the message to the sensory cortex which is in the parietal lobe.
Maybe try drinking things lie smoothies so that you would probably have the mentality that it is a drink however it is also feeding you and filling you up so try nd have a go at drinking things like smoothies (thickshakes)