"I still have to learn how to be kind to myself and the way I speak to myself," singer writes on social media Saturday Britney Spears gave thanks to her friends along her “spiritual journey” in the singer’s first comments since her DUI arrest and subsequent stay in a rehab facility . “I’m so damn thankful to my friends and so many new beautiful people I have met through my spiritual journey,” Spears wrote in an Instagram post Saturday, her first public comments in over a month. “All a blessing in disguise.” As Spears noted in the Instagram post — featuring a picture of a snake, a symbol of “good health, higher consciousness, and pure luck” — she and her sons went to an unspecified pet store recently; as TMZ reported this week, Spears recently left a rehab center in Camden, Maine after spending less than three weeks at the facility.  “I still have to learn how to be kind to myself and the way I speak to myself,” Spears added.…