To dream of something being heavy represents your feelings about how serious or important a situation is. Feeling how difficult or challenging a situation or problem is. Having your work cut out for you. A burden.
Positively, object may reflect your sense of security. Knowing it will be difficult to challenge you or force unwanted changes on you.
To dream of something being too heavy to lift represents feelings of lacking power, resources, or support from others. Feeling that a problem or burden is too big. A sign that you may need help. Questioning whether or not you are strong enough to deal with an issue.
To dream of carrying something represents your burdens, work load, or responsibilities. You may be carrying too much on your shoulders and need to prioritize. A sign that you need to take a break, lighten up, or learn to delegate.