How to boost my confidence? And change my weight.

So I'm 192 lbs but I look like I weigh 145-ish lbs (So everyone tells me). You know I feel self conscious and I prefer wearing baggier clothes. Do guys even like fat girls ever?

And also can you give me some tips on how to loose some weight. Dietary Pills, Exercise routines, food choices, ect...?
How to boost my confidence? And change my weight.
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