Not rambling at all Purple. Well done with quitting smoking, you should be so proud of yourself....the crying is good too, why should certain emotions - sadness, frustration or anger for example, be hidden or suppressed when happiness etc is ok to express? One is no less valid than the other, it's part of being human to be emotional. Too often ED's link back to someone not expressing or coping with 'negative' emotions (and then slip over into even the positive ones too...ever binged when something happy has happened and thought WTF? 
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Great that you went for a walk as well, did you enjoy it? Definitely don't suffer through running if it's hurting your knees, running is highly stressful on everyone's joints, if you know it's even harder when you are heavier it's not worth risking the long term damage. Build up to it gradually if it's something you enjoy, often our cardiovascular fitness is better than that of our muscles and joints and that's when we can cause injuries, especially when starting/restarting exercise - particularly high impact kinds. Any other exercise/activity that you have ever enjoyed or fancied trying? I really believe the kind that has the best effect on our body, mood and appearance if the one that we enjoy and makes us feel great - not necessarily the one that burns most calories.
Re the photo thing....read this
Jokers so glad you had a great week. It sounds like food could turn into a really positive hobby for you, fantastic! Come and take a look at the Eat Better thread maybe, no diets, just a bunch of us eating for health and sharing recipe ideas etc. I think you'd like it too Americas, a couple of vegetarians there and I think one vegan .