The opposite of "having the blahs" can be described using adjectives such as lively, energetic, enthusiastic, and invigorated. These terms represent the feeling of being full of life and vitality, with a sense of excitement and positivity. Antonyms for the "blahs" can also be expressed as being motivated, inspired, passionate, or even just content and at peace with oneself. Whether it's through socializing, exercising, meditating, or pursuing one's passions, these antonyms provide a refreshing antidote to feelings of lethargy and apathy. By cultivating a more positive mindset and tapping into one's inner drive, individuals can overcome the "blahs" and embrace the vitality and joy of life.