In my experience, these dont help to solve people problems. They are motivational feel good advice. In practice, they will exhaust you and dont work in the long term.
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.
It is not just difficult to apply. If you actually try to apply it and do, it setups you for fail. Because it is feel good instead of real and omits real world constraints.
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.
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.