Reese Witherspoon is doing the best she ''possibly can'' with her children.

The 'Wild' star - who has 15-year-old daughter Ava and 12-year-old son Deacon from a previous relationship and two-year-old son Tennessee with her husband Jim Toth - has insisted it is impossible for anyone to get their family and career balance ''perfect''.

She said: ''No one's really doing it perfectly. I think you love your kids with your whole heart, and you do the best you possibly can.

''But, you know, right now I'm feeling sad missing my little 2-year-old, and my daughter's about to finish her freshman year of high school, and my son has a golf tournament this weekend that I hope I don't miss.''

And the 39-year-old beauty has admitted she has made some ''sacrifices'' but is glad her children are ''proud'' of what she does.

She added to Southern Living magazine: ''There are some sacrifices you make, and it hurts your heart sometimes, but my kids tell me they're proud of what I've accomplished, and that just means everything.

''I grew up with a working mom, and I have so much respect for the things she did as a nurse and a teacher. I would never begrudge her that.''