I've suffered from mild to severe depression on and off most of my adult life and can relate to your current situation. I've had a few times where just the thought of going to work is overwhelming.
The advice from others on here as been great (apart from Mr Banana). The only couple of things I would add are:
Don't rule out taking medication - it may not be a complete cure but it can help you get to a place where you have the energy and desire to do the things (lifestyle changes, counselling) that will get you better. It might not get you out of the tunnel, or help you see the light at the end of the tunnel but it will help you deal with being in the tunnel and plan the steps you need to get out.
Secondly, be kind to yourself. Depression is an illness just like pneumonia or glandular fever. When you have a physical illness, you don't beat yourself up for not being able to do things or for getting tired quicker or not getting better. It's exactly the same with depression. You can (and will) get better but it will take time. If you're able to accept that and take the pressure off yourself then it might help you get better quicker.
Good luck and keep us up to date on how things are going.
The advice from others on here as been great (apart from Mr Banana). The only couple of things I would add are:
Don't rule out taking medication - it may not be a complete cure but it can help you get to a place where you have the energy and desire to do the things (lifestyle changes, counselling) that will get you better. It might not get you out of the tunnel, or help you see the light at the end of the tunnel but it will help you deal with being in the tunnel and plan the steps you need to get out.
Secondly, be kind to yourself. Depression is an illness just like pneumonia or glandular fever. When you have a physical illness, you don't beat yourself up for not being able to do things or for getting tired quicker or not getting better. It's exactly the same with depression. You can (and will) get better but it will take time. If you're able to accept that and take the pressure off yourself then it might help you get better quicker.
Good luck and keep us up to date on how things are going.