>>7924194You lack of meaning and just go around counting on being dummy happy or irrationally sad.
Waking up super pumped-up since the get go is something you either grow out of or sustain by forms of highly egoentric lifestyle, full of body building, diets etc.
I am unsure of what could case those swings, other than how to stop them - find yourself a passion that could easily make you forget about eating, something to fill up your mind in worse and better times. I know it might be asking for too much but it's better to do it yourself now rather than waiting for your mind to adapt by getting you addicted to network browsing etc or porn, although those can get abused easily, they take a toll on your quickly when they lack of any prospering sense.
As long as you believe what you are thrilled with is doing s͇o͇m͇e͇t͇h͇i͇n͇g͇, changing things, that it's not utterly useless, that's a good long term attraction for your starved mind.
I might be completely wrong on that but you do what you do~