I feel the same, and I always seem to be able to drop that rushed feeling after about 3-4 days of holiday. Just being in nature first make me feel I should be doing something useful but after a couple of days the more relaxed mindset kicks in. I become a nicer person to be around, I'm better at handling my kids (I'm less emotional, more calm) and I start to live more slowly. The relationship with my wife also flourishes under such circumstances. That feeling we create, of urgency, of pressure to perform, of setting the bar so high we almost always fail our own big plans, is really damaging I think. It's very healthy to feel content with oneself, to be proud and calm, to feel like you are doing well.