Some of these steps can be done before others but this is how I end up doing it
1. Try to be perfect
2. Fail
3. Envy your siblings who seem to be perfect in every way
4. Plot how to be the favored child
5. Come up with plans
6. Work your butt off doing nice things, obeying your parents, and keeping your grades up
7. Do those things but still think that your sibling/siblings get more attention and love
8. Be upset
9. Confide in your most trusted friend (I recommend a friend who also has siblings so that you can get advice from someone with similar experiences as you)
10. Be disappointed
11. Blame your sibling
12. Feel sad
13. Spend time on Wattpad where everyone is so nice and awesome and amazing :)
14. Realize that no one is perfect and that this is normal sibling relationships
15. Be happy again, maybe play a game or eat ice cream
WARNING: this guide might not work for everyone so feel free to do it the way you want
And, sorry if this offended anyone, I did not intend for that to happen and if it did please let me know what so I can change it :)