Waiting in a line has several interpretations. On one hand, it is a sign of impatience. On the other, it indicates the discomfort of being in a group of anonymous people without standing out in it. In that case, the dream reflects your desire to differentiate yourself from the rest. This can be interpreted as either an inferiority complex, or as a desire to excel.
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.