That sucks!  

 Try blessing of the energy centers.
Sounds woo-woo but it worked for me each time with everything.
You have decentralized brains all over your major glands. They think for themselves. They are really smart. They make decisions, on every category they can, production, consumption of energy, repair, etc.
Decisions are often made based upon your psyche (mysterious and complex psyche) . And they translate it to biology. Sometimes those brains, make contradictory decisions and start to play out of tune with eachother. Imagine eight musicians playing in different keys and often different tuning systems and rythm.  They will consume a lot of energy and deplete themselves, they will burn all their resources to produce nothing more than a decaying noise.  And they could destroy themselves over time if they keep doing that for long periods of time. 
Mind over matter. Subtle reigns dense. As above so below.

Your task is to sit quietly for an hour. 
Think of your major chakras in your body one by one upwards. Tell them everything is okay, bless them with your love and good intentions for greater good. Tie them together, one by one in harmony. (sing something to them  ;) ) And breathe quietly and lay your attention to them, gently pay attention while you breathe.

Root chakra.
Sexual chakra.
Solar plexus.
Heart chakra.
Throat chakra.
Third eye.
Crown.
and beyond 80 cm up your head chakra. (don't really remember the name).

You can try the Dr. Joe Dispenza one if it's your first time it guides you.
Or you can do it on your own (I've realised on my own I discover many many things about myself and the way these brains think and what it is stored in their memory and how they feel and act)

https://youtu.be/HaHi9w-Vo7Q

 

 Thanks! I know nearly nothing about chakras, but most of my problems are pure neurosis and stress acting out, I should try something. 

 chakras are, among other things, clusters of neurons you have around all your major clusters of glands (responsible for producing, creating, repairing, energizing, your physical body)
Those neurons act as brains act. Think, project, remember, decide. 
So we think we think with the head brain but instead we are thinking mostly with our three lower brains. "Survive" "Run" "Fight"  "Reproduce (obtain pleasure)" "Eat/produce energy to: Survive run fight reproduce" 
That burns out anyone in a short time.
So telling these brains we are okay and doing okay and everything will be okay is letting them heal, repair, build, and release the expenditure of energy to the upper brains : Love, express, imagine, connect, receive.

For neurosis I would recommend mushrooms microdosing.  Psylocibes, amanita, reishi, lions mane. They would fix any nervous problem, nurture and create order. Cleanse parasites, reestablish gut microbiota, be seeds for happiness and meaningful life. You can stack them no problem and no side effects. All natural and regulatory adaptogenic medicine.

But it's key that you talk to your body. Nothing can work otherwise.