If the ECO (Entry Clearance Office) is happy you have adequate funding, that you have compelling reasons to return, a good reason to make the visit and you do not exceed the 6 months UK time in each 12 month period, then everything looks good for you.
You did it already 2 times so why not 3?
Stay positve, should be OK
Each application is reviewed on it's own merits.
A family visit application is fully open for reconsideration and appeal in the case of a disputed refusal. Although, I know that's very stressful.
Good luck