Changing careers at 3 years into a job, is it realistic? after 3 years as a data-entry clerk

After 3 years as a data-entry clerk I am thinking about moving into a different field. This is my first time dealing with any of this. I have a little time and a small budget for training.

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.