Our panel of financial planners explain healthy spending routines and investing in stocks As we inch closer to the April 15 deadline, you may be putting off filing your tax returns for as long as possible. Our Smart Money experts advise otherwise. Today, they outlined what you can do to leave fiscal irresponsibility in your past, and how you can invest wisely in the stock market. David Jackson , financial adviser at Waddell & Reed Sandi Weaver , senior adviser at Petrovic Weaver Financial