go slow; do what you can but don't push yourself; it will get easier in time. Everyone's "time" is different though, so don't go comparing yourself with anyone else and don't let anyone else tell you that "you should be done by now" (yr T will never do that, but other people can and it's amazing).

think if a beloved friend had lost her loved mother, how gentle you would be with her, how considerate of her feelings. well, do that for yourself too. take care