At it again....but, this time it is different

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Going to be 50 in a few weeks. Been on the right path for the last 13 months. Really enjoying this lifestyle. Never turning back. But, it can be frustrating. Not afraid to be different (yes, I am the 'health food nut' at the office) but it does get frustrating when I get stuck - either with what the scale is presenting me (not all that worried about 'numbers' in this context) or when I cant get past a certain number (think, squats! LOL!). Looking forward to hearing for you all who have been there....how did you overcome? Love me some success stories!