Here are 6 reasons why good public speaking skills can impact your career and finances: br 1) Demonstrates knowledge. br 2) Increases knowledge. br 3) Develops and shows confidence. br 4) Differentiates you in the workplace. br 5) Helps you avoid career risks. br 6) May make you more promotable. br br Speech Coaching & Public Speaking Classes covering presentation skills training, how to change your voice & how to improve speaking skills. CorpSpeechCoaching.