We all have weaknesses. Often though, those weaknesses can be strengths if we change how we look at them. 
For example, the strength of a child that argues is that they feel confident in expressing their feelings and they know what they want. 
The strength of a child who walks away during conflict is that they know their limits and don’t want to increase friction or say something they would later regret. 
The strength of an indecisive child is that instead of rushing into decisions that could harm themselves or others, they take the time to look at all possible options logically.
When we can change our viewpoint and shift our perspective regarding what our child is doing, it will pay huge dividends.
One way that parents can shift their focus on see weaknesses as strengths is to use the skill of Effective Praise. Effective Praise lets a child know that you see the good they are doing and not just the bad, which gives your child confidence that you can help them.
If you want your child to change, praise them. Children respond to Effective Praise. You can find the skill of Effective Praise on the Smarter Parenting website.