As an online worker, you can do more tasks for your clients besides writing snippets, reviews, emails, web content, or blogs. You can choose a variety of tasks that other people around the world need help with.
In fact, you can even be trained by your very clients to do certain tasks for them. Just be teachable, humble, and available.
The more you write, the better you become. The more you read, the more vocabulary and experience you gain. These will give you ample skills and increase your confidence.
Source: How to make money online