I agree with Mike you either sail along with a fair wind in your sails or you end up wanting to jump overboard ,and as for starting a build/blog you feel committed and if its not going to plan its even worse because of the committed feeling. The little 1/72 Churchill im building at the moment I hate its guts but although no one would care if it was left where I've got to it does give you a sense of failure.
Dave the biggest get out in this hobby is to compare your own work to other peoples ,I admire other peoples work and draw a lot of inspiration from it but thats all as long as what I've done is the best I've felt I've done with what I've built then my own self satisfaction is good enough. Dave