Simply seeing ashes in your dream means that you will be soon compelled to look forward into the future. This dream can also mean that you will be able to overcome some issues from the past that might be giving you trouble.
Sometimes seeing ashes in your dream can mean that you are unhappy with the changes in your life that have happened recently. You might be uneasy by the rate of changes that happen around and this dream might be a sign that you prefer a more stable environment.
In other interpretations seeing ashes can mean that you are still bitter about some happenings in the past. This is especially true if the ashes seem to be still hot or smoking in the dream.
Seeing ashes in a fireplace signify that you are quite contempt with way some issues from the past were resolved. This dream can also mean that you are not bothered by your past anymore and that you have find a way to focus more on the future.
Seeing ashes in a large outdoor fire means that your social circle will be put pressure on you about some deal that is about to happen in the future. This dream can also mean that people from personal life will pressure you about something from your career.
To be burned by hot ash in the dream means that you will have to more careful in your choices concerning the professional life. This is especially true if this dream has a recurring nature.
To shovel ash in the dream means that you will be given a rather menial and uninteresting task in your professional life.