LOVE yourself more before you start again. I've been on the same road back then and it was really devastation. Yes it can be life changing to. But knowing yourself and loving yourself will equip you to be ready for the next round of your journey. No amount of effort will ever be enough to get you assurances, their will be things and people who will come and go and hopefully stay, but whichever will come, at least be secure about yourself. IF they leave, its their loss not yours. Think of it as a blessing and opportunity to discover someone better.