Unless you get really,really strong winds, and it doesn't look like it does, the tree is fine. One other thing is that it is a Silk Oak (Grevillea robusta) and not a Jacaranda. It should have yellow/orange flowers if Grevillea and blue/purple if a Jacaranda. If it DOES have blue/purple flowers it isn't either one of them. The leaves aren't right for Jacaranda. We have lots of big (60'+) specimens of both of these that survive very strong (75 MPH) winds every Fall/Winter during Santa Ana wind events. They lose some branches, but the trunks very rarely fail.
