Abu Huraira (Allah be pleased with him) reported Allah's Messenger ﷺ as saying: Do not observe fast for a day, or two days ahead of Ramadan except a person who is in the habit of observing a particular fast; he may fast on that day.
This hadith also teaches us about discipline and moderation in our religious practices; we must ensure that we are following what has been prescribed by Allah and His Messenger instead of going overboard with our own ideas or habits which may lead us astray from true faithfulness towards God Almighty. Additionally, this hadith also encourages us to maintain consistency in our religious practices throughout the year instead of just focusing on them during special occasions such as Ramadhan or Hajj season only; this will help us stay connected with God Almighty all year round instead of just during special times when everyone else around us is doing so too!