Birmingham taxi driver Mohammed Arshad was murdered by Andrew Bayliss in a "cruel and savage" attack, a court heard.
West Mercia Police have released extracts from Bayliss's diary after a judge sentenced him to a minimum of 30 years in prison.
Read the extracts below.
Having a hard time writing this to you, really I do not have the words, or where to start.
I am in Wales now, I came as it was all I could think to do, I came as I was really scared to be at home.
Last few months have been the worst of my life... So far, I'm sure it won't be long until it is WORSE!
I have been really paranoid to be home, this would explain my strange behaviour. Never could I imagine our emotions could be so strong, paranoia, guilt, fear, mis-trust. But all of this I deserve, and more much more.
I really don't understand how I come to this point in my life, somehow I make wrong decisions and my focus is on this, then I always make a mess.
I have made many mistakes, most things like choosing wrong jobs, as I know I am capable of so much more. I do regret having *****, I love him more than you, can know; until you have children. He is the most loving and amazing child, but he deserves to be part of a family. ***** does not treat the children correct and I fear for **** growing up. This is heartbreaking for me now, I know that one way or another I will not be there to have influence over **** and give him my love.
I don't know what this is, maybe an explanation, confession, I feel so bad, guilty, sick - feel so sick! I feel sick when I think about ****, **** ,**** , **** , **** & **** , **** and my cousins **** & **** who are married with children.