Vision: Carrying a backpack means that problems will weigh heavily upon you and interfere with your everyday activities. See Luggage.
Depth Psychology: How much responsibility did you take on? What experiences from the past are you still carrying around? Have they becomc a crushing burden? A dream about a backpack is very important and—together with the rest of the images—ought to be explored in depth.... Dreamers Dictionary
The backpack has several possible interpretations. On the one hand, it is a symbol of travel that reflects a provisional situation. You probably feel overwhelmed and exhausted by routine and want a change in your life. On the other, it also represents the burdens you carry day to day. The condition of the backpack and how heavy or light it is will be key to the correct interpretation of the dream.... The Big Dictionary of Dreams
Anything that allows you to pack certain items for transport is symbolic of having access to various tools for living.
A backpack puts such helpful items easily at your disposal, with the implication of a journey on foot. Such a journey is symbolic of a trek into deeper places of your consciousness, and therefore the backpack is symbolic of the assistance you may need along the way.... Complete Dictionary of Dreams
What you are doing with your life. Thus your destiny or direction in life; the direction or function of your personal growth at time of dream; the movement of life through the aging process. Travelling without goal: having no aim in life; confused about direction; taking life as it comes. Going on holiday: moving towards giving yourself more free time; growth towards allowing yourself to fulfil your needs instead of always considering other people. Travelling to an island: becoming more independent; isolating oneself. Travelling alone: independence; loneliness. Travelling with others: one’s social relationships; how you compare yourself with others; what feelings and attitudes influence you. See railway; boat; road; airplane. ... A Guide to Dreams and Sleep Experiences