Don't worry about percentage of your calories from fat, just concentrate on total calories and having a deficit of about 500 calories from your maintenance level each day. Fat from nuts, seeds, avocados, olives, coconuts, eggs, and even natural grass-fed beef won't negatively impact your health, but each gram of fat contains 9 calories so the sheer number of calories can stack up fast.
Just remember that fat is very satiating so the higher the percentage of calories you get from healthy fats, the less hungry you'll be throughout the day and the more sustainable your chosen lifestyle. Too much carbohydrate stimulates insulin production, which then causes cycles of hunger and tiredness.
1) eat real food - more vegetables, moderate meat, moderate fruits, less grains, less sugar, less vegetable oils.
2) exercise - moderate intensity cardio, sprinting, heavy lifting, dedicated stretching and mobility.
3) live - relax, de-stress, meditate.
Disclaimer: I'm not professionally qualified to make any formal recommendations. I've just done my homework and I'm my own guinea pig. All of my data, unless otherwise cited, comes from a sample size of n=1 (me).