1. Be Reliable. The most common, and the most important. Some clients have been disappointed by their virtual assistants. They accepted the job, but they’re not committed to finishing it. Reliability is a must in a virtual assistant. No matter how qualified you are, if you are not reliable, you will lose clients, and you will find it hard to find one to trust you again no matter how good or skillful you are. Be responsible for doing your job. When they give you a task, you must be committed to doing it with your best. Work at it with all your heart.