Dad of two. Exhausted and finding it impossible to care about a damn thing. Is this normal?

Hi all. This is my first time posting here, so apologies in advance if I've botched any of the posting rules (I did have a cursory glance).I'm a father to two girls. The eldest is almost four, and the youngest is almost two. Now, before I go any further I'd like to state that I would not be without them for one second. Beneath the day to day mundanity, they are absolutely my world.But here's the thing - I'm exhausted. I don't mean 'a bit tired' or 'somewhat fatigued'. I mean that I am mentally and physically akin to an animated corpse. Between the girls and a full-time job, I'm on my knees. I find myself spending evenings sat in a darkened corner, snarling at anyone who 'dares' interrupt my mental slumber. I'm like a PC in hibernation. I've also become a scathingly sarcastic asshat. I'm a shadow of the person I used to be, and I don't know what to do or where to go from here. Some times I feel like just getting in my car and driving off the nearest cliff.Why? Well, for a start I can't remember the last time I had a good night of sleep. My sleep has been disrupted heavily for over three years now... honestly, I keep thinking to myself "I don't know if I can take any more of this", but I do - I keep on going. It isn't getting any easier though. The lack of support doesn't help, either. I know many people out there don't have support either, but it's frustrating when your parents live quite literally a few doors down the road, yet they show very little interest in helping out.The real kicker is that my wife is Spanish, and therefore she has a totally different approach to parenting. Try as I might (and oh boy did I try), I cannot get her to adhere to things like routines, or sensible sleeping times. It's irrelevant anyway, because they go to Spain so frequently that any semblance of routine they do have instilled in them is absolutely shattered by their Spanish side. Kids up at 2am in the morning having a ball of a time? No problem!I dunno. All these years on I feel so unprepared for all of this. Although I absolutely wanted kids, we had them at this time because of my wife's age (she's 11 years older and therefore she was worried about the risks involved with becoming pregnant later on in life). It was always my idea to have myself 'sorted'. I know that's a fable, of course - are any of us ever truly sorted? Either way, I at least wanted to be at a point in my life where I had direction and a plan for the future.... but now, selfishly, I find myself exhausted and extremely bitter at the fact that I haven't done any of the things I want to do, nor can I find the time or energy to do a damn thing about it. I'm stuck in a job I hate (not a bad job, though - just not for me) and blah blah blah, whinge whinge whinge.Even I find myself insufferable.Is this normal? Is it a regular thing to feel like you just want to jump off the planet because your life is completely and utterly over?Sorry for the moan. I do realise how lucky I am (really, I do) but no matter which way I cut it, I can't get over the fact that I'm about to have a f*cking breakdown. via /r/Parenting http://ift.tt/2rtkgRB