Quarantine & relationships

Is anyone else in a long distance relationship and having a hard time during quarantine? I miss him a lot but I also am doubting things and letting all these bad thoughts get into my mind. And I know it’s not really how I feel... so can anyone offer me advice or guidance on how to help that because I feel like I’m reverting back to my bad mental and emotional habits from high school and I that was coming up on 4 years ago😳😳