Hi Chema, thanks for writing this and sharing the hard honest lessons. From the times I have spoken with you I realised you are a very smart guy and even though quehaceshoy did not work out, I am pretty sure you will find success eventually.
There are too many people pretending that it is easy to create a startup. It is not and when smart people like you fail, we should all take the opportunity to learn from it. Posts like this need to be shared more!
Good luck with your next venture and hope we get a chance to grab a coffee or have lunch sometime soon.