I think it's a good piece of affirmation to say, "no bad vibes". It's good to steer clear of bad feels and situations, not everyone wants to be in a bad position.
But if you proclaim this at every point, you're well on your way to becoming unrealistic. Perhaps we're allowed the period of childhood and before long, we realize that life isn't perfect and we won't always get what we want.
We might want to stay away from ‘bad vibes’, but life doesn't always grant us that bliss. There's always that annoying teacher, or aunt, or cousin, or boss, or situation that seemingly pops out of nowhere.
In times like that, remember that it's life. There are highs and there are lows and there are mehs, what matters is how you move through them.