Do you have to abide by Sharia Law in order to be a Muslim?

Sharia is not just about criminal punishments. It's also about how we pray, eat and drink. It's only for Muslims. Sharia Law can only be applied on an islamic state. There is no islamic state in current ties, only countries that claim they are. As a Muslim we are taught to abide by the laws of the lands we live in UNLESS it does not allow us to practise our religion.