It may sound trivial, but the first thing I'd do is ensure your diet is in check and that you're getting enough exercise. Being unhappy in other aspects of your life can really make a crappy job seem even crappier.
A 13-14 hour work day sounds pretty daunting. Could the pressure you're putting on yourself with the startup be making your day job even more unbearable? Your concerns about being beaten to market are understandable, but remember that there's almost definitely as much (if not more) work to be done when you actually get your product to market. It likely won't be a picnic, so making sure you balance your time between work/pleasure now is important.
And one last thing - if people can get away with sleeping or playing games on their phones all day, it sounds like a pretty 'lax' working environment. It sounds like it has the potential to be whatever you make it.
A 13-14 hour work day sounds pretty daunting. Could the pressure you're putting on yourself with the startup be making your day job even more unbearable? Your concerns about being beaten to market are understandable, but remember that there's almost definitely as much (if not more) work to be done when you actually get your product to market. It likely won't be a picnic, so making sure you balance your time between work/pleasure now is important.
And one last thing - if people can get away with sleeping or playing games on their phones all day, it sounds like a pretty 'lax' working environment. It sounds like it has the potential to be whatever you make it.
Sorry if I've stated the obvious & good luck!