I'm sorry you feel that. Have you spoken to someone about it today? Friends, family, or a professional such as a gp, nurse, your diabetes team, a counsellor or the samaritans etc. If not, please do - don't suffer on your own.
Life can be hard at times, and when it all gets on top of you, it's important to get help. Diabetes burnout is very common (I don't know if you feel that, and there's no need to answer if you don't want to), and most hospital diabetes teams have a psychologist they can refer you to.
Please take care, and let us know how you are doing.