7 Signs You Have A Toxic Sibling - Sibling adult rivalry solutions Like 69.73% | 757 votes Views: 681 956 Download Don't Take It Personally. Find Support Elsewhere in Your Life. Categories: Adult Comments: Add Comment Cancel By Kizuru - 10:10 Don't Perpetuate. By Tugis - 14:06 Accept the Reality of the Situation. By Kigabei - 09:31 Invest In Your Own Family. By Fekus - 18:21 Get Additional Support If You Need It. By Visar - 01:09 If you feel stress from adult sibling rivalry, you may be surprised to find that you're not alone. Here are some things you can do to feel better.