I have beenn trying to find meaning to a dream that I had last night and am struggling to figure out what it means as it is not in my book anywhere.  Anyone with ideas or insight, I would sure appreciate.  Thanks in advance.

Dream is as follows:  I was standing in a parking lot at night lifting heavy round plates (the kind that are in gyms for bench press, etc).  I was loading all of these plates into my jeep grand cherokee and my mother was just standing there watching me do this. 

Parking lot - In normal, everyday life, it's a perfectly acceptable place to meet, rest, or to change drivers. It suggests your need to quit 'driving yourself' so hard. A need to relax, or rest from the things that 'drive you'.

Night - suggests you feel some major setbacks and obstacles in achieving your goals. You may find that some issues you are facing are not all that clear and you need to put them to rest for awhile before a decision is made.

Weights - represents seriousness, a sense of burden or responsibility, something that is important.

Vehicle - usually symbolizes our passage through the journey of life. The way that you travel through your life's journey, and your effectiveness in controlling your life.
The type of vehicle will give indications of the type of experience being related in the dream message. For instance, an ambulance will indicate a need for healing in the giving and receiving of experience, a police car will signify the need for discipline in experiences, an old car might suggest old habits, or 'things the way they used to be' or the need to change the old way of doing things...etc.

Mother - represents, nurturing, wisdom, the subconscious, intuition, natural and instinctive life, and more experienced part of feminine self aspect. Also, your relationship with your mother. That the dream isn't about your Mom, but she is there, suggests you feel the need for guidance, or support.
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Have you been pushing yourself to reach a goal?
Are you wanting a rest, or are needing a break, from something?
Is there a serious situation you're facing, something very important?...Something weighing on your mind?
Is there something you must to do, or learn, on your own, but you're afraid to try for fear of failure?
Are you usually able to 'get through' just about anything, but there is a situation now that is giving you a hard time?
Are you going through a rough patch, and some help from Mom, or another 'mother figure', is needed?

Hope this helps, best wishes!