Katja66, there's nothing wrong with your age. But don't tackle winter ascents alone without basic knowledge, even experienced have avalanches, slips,... but in right conditions and with knowledge, mountains in winter are much more beautiful than in summer. You'll be surprised how many people you meet on a nice day even in winter. I recommend two courses. One is free for avalanche protection organized by GRS, the other is Winter mountaineering course organized by various PD (Lj. Matica definitely)