You know when the most precious thing is taken away from you, there is nothing that can replace it. I can't seem to find meaning in anything else and now everything seems bleak to me. How do I go about just living life? Nothing matters. I can't seem to find the importance of anything else.
Sorry about your situation. I have been in similar situations and I believe the best thing to do is to consider yourself on break from ordinary life. You are in an in-between state until God creates a new life for you. Focus on doing your duties, and constantly ask God for guidance, forgiveness and ease, and through Him seek a satisfactory solution. It may take months or years; your job is to struggle through it, stay patient, and leave it to Him to create a meaningful life for you anew. Nothing is impossible for God, so even if you see no way out, even if you see no alternative to what you have lost, trust Him, stay patient, and leave it to Him give your life a new meaning.
I also recommend that you seek medical help if you are severely depressed. The right drugs can make this period of life more bearable and productive, and once you no longer need them you can stop using them.