To overcome block here are few steps to follow:)
1 do not force urself to sit and write. Give urself time to get back on chair.
2 get out into the nature whether it's ur garden, walk to nearby park or plan trip with family or friends if possible. Automatically u would inspiration to sit down to write.
3. Listening to music, writing is art and being artist u can feel anything including music it helps u to come back to ur track inducing emotions.
4. Read ur favourite novel or books it will inspire u to complete ur journey to write a story.