a taste of heaven, perhaps... but we are still a ways off from the real deal - "at hand" can be translated as "now", but the same phrase has also been translated as "near". you are right - life is SO much better when we put our faith in God and truly repent.
but I have never been able to "behave myself". It wasn't until Christ came into my life that I could even give "behaving" a sincere effort, and it is only through His efforts in my life that I have had any success at all. In essence, it is HE that is behaving me, not myself.