According to great Torah Scholars there are 613 commandments (see link) that the Jewish people should follow and one’s they must not do, I believe these wise people would agree it’s impossible for one person to follow them all. For some concern issues of occupation/lifestyle that only some will the opportunity to perform. While other’s might appear to costly/complicated for others to feel comfortable in their personal obligations. Therefore I believe one should focus on the one’s that correspond to their life and pray that others will have the opportunity to observe other laws. Maybe even become an expert on a small portion of those commandments so you can help others put them in their life’s in a way that makes them see their relevance without undue complications. I also believe that these laws are so numerous and meant to help us become better people that we should open this observation to all people’s in ways that help them get closer to the one G-D who created us all.