Peaceblinkfriend To raise my self confidence by a bit or to raise my self confidence a bit ? , but I don't think it's wrong.
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PeaceblinkfriendTo raise my self confidence by a bit or to raise my self confidence a bit ?'By' sounds odd to me., but I don't think it's wrong.
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PBF
PeaceblinkfriendWhat if I subtitute 'raise' for 'boost' or 'improve'? Would it still sound natural ?Yes. But boost sounds more natural than improve.