Complex sentence: He began writing as a teenager by using the blogging platform Tumblr to document his adolescence, tackling heavy topics such as his father's suicide, his experiences as a male model, and his struggles with substance abuse, eating disorders, and depression.
Split into simpler sentences: He began writing as a teenager by using the blogging platform Tumblr to document his adolescence. The blog tackled heavy topics such as his father's suicide, his experiences as a male model, and his struggles with substance abuse, eating disorders, and depression.