father to a five month baby - feeling burned out

Hi,So , I am a father for a five month old baby , i like to think of my self as a really involved father, the first few month were crazy (as to be expected), and as my wife was also exclusively pumping it meant that she had to pump every 3-4 hours , and what it meant for me is that i wanted to make her life easier, so i woke up every time at night to feed the baby so she will get more sleep, going later to work so she will have time to pump and eat something in the morning, coming home earlier from work, and taking as much responsibility as possible in the weekends so she will get more rest.In the past few weeks things got easier, she almost stopped pumping , and the baby wakes up only once at night ( so my wife can get a whole night of sleep), for now the thing that we struggling with is the sleep training ( but this is also to be expected)i sleep around 7 to 7.5 hours at night ( with one half hour feeding break in the middle) , we manage to get some quality time in the evenings and the sex life is quite good for a couple with a 5 month old babyBut ironically i am now feeling burned out or even maybe depressed, every evening after he is going to sleep i am afraid that for some reason he will wake up , and we wont get any sleep , or when he will start teething he will stop sleeping.And as my wife really "likes" to update me all the time about what happening at home during the day ( good and bad), I am also feeling on "edge" whole day when i am at work because maybe i will get a phone call from her that she is really struggling ,and i will feel responsible that i am not able to help her because i am at work.I feel that i dont have any time for my self , because i am going straight home from work , as i want to help her , and i dont think that it is fair that i will go to the out for example instead of going home to help her.I also am feeling frustrated that i am working so many hours ( 9 hours per day ) and i am not at home to help or to hang out with them.I am not sure how can i stop feeling anxious ,expecting the worst, and guilty for not being able to helpMM via /r/Parenting http://bit.ly/2XRUQZc