If I can guarantee you one thing in this world, it is that nothing is guaranteed. You will spend minutes thinking one thing, only to realise another. There will be hours spent planning the cemented plans that suddenly fall apart. Months will be used to prepare for times that will never happen. Nothing is guaranteed, except for that fact itself: and one other.
For I can also promise you that, if you keep going and do what is right and good, if you look after and love not just the people around you but yourself as well, if you try your hardest and never give up, then the fact that nothing is guaranteed will not matter. Because you'll get through whatever is thrown at you- and you'll come out smiling.