Feeling haunted by something or someone is a sign of severe restlessness, the cause of which has not yet been discovered by the dreamer. It is possible that feelings of guilt are affecting your sleeping. However, it is also possible you need to face a problem that, so far, you have consciously refused to see.
Gallery of dreams
Have you ever remembered your last dream? Were they colorful? Yes. Most of the dreams will be colorful as experienced in reality. Very few people visualize dreams in black and white. A study was conducted where the individual was given a color chart and asked to match colors that they dreamt. Most of them chose light colors while very few choose only black and white. It was very clear from this study that most of them have colorful dreams.
Keep stress at bay
Your cardiovascular health will likely to suffer when you deprive yourself to sleep. Sleeping can surely reduce the levels of stress you're going through and with that, you could have a much better control of your blood pressure. Not having enough of sleep will also affect the levels of your cholesterol, which plays a significant role in heart disease.