I am relatively new to fostering just 5 years. I take short term placements, the three main placements have been five year old for 6 months, one year old for 14 months and a 16 year old for 18 months.
Each have been very different in the rewards and stresses they brought to our family.
The stresses in each case have been in relation to behaviour occurring in relation to seeing their birth families (and this varied from daily, to weekly to bi-monthly dependent on individual situations).
Each of them came with behaviours related to their past experiences, but those behaviours we worked on over time, and they changed as a result of being with us. It was very rewarding to see each of them develop as individuals and grow in resilience and strength. To see their fears reduce and their confidence grow, and to be part of that process was a privilege.
It is hard work, it is not like dealing with your own children, but it is very rewarding. It does impact your own children, in both positive and negative ways, and managing that is part of the fostering process.
We are currently taking a break from fostering, just to give ourselves all time to recuperate and regenerate before welcoming another child into our family.