Anyone from Vancouver (Canada)?

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Hi all,
I need some motivation and tips! I am trying to lose 20 pounds and feel like nothing works. I am watching my diet, exercising 3 to 4 times a week, walking every day, hiking every weekend but it's still here. It's like my body is so stubborn, it's not keeping up with me anymore. Anyone in the same situation or was in the same situation?
Nawal