And what they actually make is to create situation in which your needs and things you want to achieve are less and less met. Or just make you look unauthentic to others - they will cease to believe your projected emotions.
This doesn't mean it can't be helpful. I know because some self help knowledge in the past has helped me.
Take this article - sometimes, fairly often, the "bad vibes" are a correct observation of the other persons attitude, opinions and intentions. Sometimes people are in fact hostile or cold, whether for personal, professional, fair or unfair reasons.
This part of the advice, if you apply it, is making you helpless and powerless. And conversely, it over time make you come across as manipulative person, because that is what you do majority of the time.