Everybody gets scrappers block at one point or another ..even paper scrappers! There rae a few ways you can try and get it over it ..scraplifting is a great way. Using lots of premade elements as well and maybe just challenging yourself to create one element for a page. Look at how you can already use things you have made to create new elements ( colors etc) you dont have to reinvent teh wheel every time. Pick an album subject ..like you did with teh disney book and make a start with a fav page you have already made as a starting point. There is no rule saying you cant use both DIp and PS at teh same time
Also try creating a layout one day ..and then experimenting with ideas the next time.
Take the pressure of yourself and concentrate on another aspect of scrapping like jounaling or organising.
I hope some of these ideas help ..