Welcome to the forums! and thank you for reaching out - It takes alot of strength to seek help!
depression and anxiety is brutal - I definitely know how you feel. I've been suffering depression and anxiety for around 15 years now and I only opened up and starting talking about it 8 months ago. Before I opened up, I had no motivation, I lost interest in pretty much everything and the things I knew that made me happy - I didn't feel anything for. I felt like I was going though life as an emotionless robot.
It wasn't until I had a breakdown and sought help I started to feel again, I felt the tingling sensation of happiness - I cried. It is a battle and its a battle we have every day - but its worth it mate. I still have my bad days of course, but I also have good days.
I encourage you to chat to a psychologist. I've been seeing one for 8 months and its helped me so much.
If you're on facebook, I'd recommend looking at Haka for life - a page focused on mens mental health - The guy is a brilliant speaker. All the videos are worth a watch especially the 25 pushups for 25 days videos and the current check in videos.
You're not alone here mate - we're with you.