I found that the best way to avoid this tunnel vision is to have thorough planning. Whenever starting a project, it is vital to examine all routes available. It is also important to explore each option individually and pick the one that is most suited for you while having the others in your back pocket. It is sometimes easy to view all your options when you’re deep in one. You can avoid this by planning ahead and always having a second option even if it adds cost or time to your end goal. At work, I hear people all the time talking about going down a rabbit hole. This means to keep exploring a solution that has no end and will get you nowhere. Another strategy to minimize this happening is to always have a line that you can’t cross. For example, say, “if this solution takes me more than x days to complete, I will start exploring other options”. This gives you a mini deadline to fill so that you don’t end up nowhere and have to start all over again.