I have a problem of not completing anything I start to do. Whether this action has to do with my acts of worship or my worldly life. What is your recommendation?
This is a behavioural problem. It requires practical solution and remedy. To overcome this shortcoming learns to persist when you embark on something. Probably the first successful experience will motivate you. Two things will help you to achieve this: (1) dividing the deed into small steps so that you will feel more motivated to complete each stage. (2) Choosing short and quick tasks.