Start writing by thinking, not wrestling with words.
Remember yourself. Deep inside, you have an observer, a constant neutral witness to your posture, gesture, facial expression, breathing, taste, impressions of light and sound. Don't leap to interpret. Just be there and observe.
If you'd blush saying something in person, don't write it.
Your language indicates?and limits?what you think.
Guilt loves the passive.
To write better you must develop your taste for truth. You have to pay more attention to what you really think, feel, see and want.